Jason Kubler

Kubler at the2022 French Open
Country (sports)	Australia
Residence	Brisbane,Queensland, Australia
Born	(1993-05-19)19 May 1993 (age 32) Brisbane, Queensland, Australia
Height	1.78 m (5 ft 10 in)
Turned pro	2011
Plays	Right-handed (two-handed backhand)
Coach	Andrew Harris, Jarrad Bunt, Hayden Bishop, Joel Hennessy,Stephen Huss
Prize money	US $2,954,661[1]
Singles
Career record	28–35
Career titles	0
Highest ranking	No. 63 (24 April 2023)
Current ranking	No. 179 (2 February 2026)[2]
Grand Slam singles results
Australian Open	2R (2023)
French Open	2R (2022,2023)
Wimbledon	4R (2022)
US Open	2R (2018,2022)
Doubles
Career record	22–22
Career titles	1
Highest ranking	No. 27 (22 May 2023)
Current ranking	No. 71 (2 February 2026)[2]
Grand Slam doubles results
Australian Open	W (2023)
French Open	1R (2023,2025)
Wimbledon	2R (2023)
Other doubles tournaments
Tour Finals	RR (2023)
Grand Slam mixed doubles results
Australian Open	F (2022)
Wimbledon	1R (2023)
Last updated on: 2 February 2026.

Jason Murray Kubler (/ˈkuːblər/KOOB-lər;^[3] born 19 May 1993) is an Australian professionaltennis player. He has a career-highATP singles ranking of world No. 63 achieved on 24 April 2023 and a best doubles ranking of No. 27 reached on 22 May 2023. His best career achievement was amajor doubles title at the2023 Australian Open, with compatriotRinky Hijikata.^[4]

Despite a promising junior career, which included the junior world No. 1 ranking and comparisons toRafael Nadal,^[5][6][7][8] Kubler has spent the majority of his professional career on the lower circuits due to a hereditary knee condition that results in weakened meniscus around the joints.^[9] The condition has plagued Kubler throughout his career, resulting in seven knee surgeries.^[10][11] Kubler also spent four years of his professional career playing exclusively onclay courts to avoid further structural damage to his knees.^[9]

Kubler was born inBrisbane, Australia to an Australian father and aFilipina mother.^[12] His father, John, introduced Kubler to tennis at the age of five,^[8] but died of cancer when Kubler was eight years of age.^[5] Kubler grew up in the north Brisbane suburb ofMango Hill^[13] with an older brother and a younger sister.^[14]

In 2009, Kubler became just the second player in history (after Rafael Nadal) to go undefeated through the World Youth Cup andJunior Davis Cup.^[5] Following his success at the Junior Davis Cup, Kubler won five titles in a row which saw his junior ranking rise to No. 3 in the world.

Kubler won six junior titles throughout his career and achieved the combined No.1 world ranking in May 2010 with a win–loss record of 67–17 in singles and 40–19 in doubles.

Kubler made his professional debut in September 2008 at theAustralia F7 Futures event on theITF Men's Circuit, the third tier for men's professional tennis. Kubler won through qualifying to make his main draw professional debut but lost in the first round to compatriotMarinko Matosevic.^[15]

In 2010, following continued success on the junior circuit, Kubler was granted wildcards into theBrisbane International andSydney International qualifying draws, but failed to win a match at either event. He was then awarded a wildcard to make hisATP Tour and Grand Slam debut at the2010 Australian Open. Drawn against 24th seedIvan Ljubičić, Kubler was handily beaten 6–2 6–1 6–1 in a lacklustre display.

In April, Kubler won the first main draw professional match of his career at theAustralia F3 Futures event inIpswich, where he went on to make the final, losing toBrydan Klein.^[16] Kubler's best results for the remainder of 2010 were a string of semi-final appearances at Netherlands F2, Italy F23, Portugal F5 and Spain F37 Futures events. He finished the season ranked No. 535 in the world.

Kubler missed the start of the 2011 Australian summer of tennis due to a knee injury.^[17] Further injuries during the year limited his play before he won the first professional title of his career at theUSA F28 Futures event in Birmingham, defeatingYoshihito Nishioka in the final.^[18] Kubler won his second professional title the next week at theUSA F29 Futures event in Niceville, salvaging an otherwise frustrating year with injury. He finished the 2011 season ranked No. 530 in the world.

Kubler began the 2012 season by entering four Futures tournaments in Florida after again bypassing the Australian summer. Kubler lost in the final ofUSA F1 toJack Sock andUSA F3 toBrian Baker before winning theUSA F4 event in Palm Coast to cap off a promising start to the year. Kubler returned to Australia in March, where he lost the final of theAustralia F3 event againstSam Groth but defeatedJohn Millman to claim theAustralia F4 title in Bundaberg. Kubler then travelled to Europe, to compete in further Futures tournaments and the firstChallenger events of his career, where he made a quarter-final at theTodi Challenger in September. Following more success on the Futures tour, Kubler's world ranking steadily rose, peaking at a career-high No. 268 on 29 October 2012. He ended the 2012 season ranked No. 332 in the world.

In 2013, Kubler played in Futures tournaments throughout the United States, Spain, Great Britain, Australia, Italy and Egypt, but only on clay due to ongoing knee concerns. He won three Futures tournaments for the year, however his ranking dipped to No. 397 to end the season.

Kubler again chose to miss the Australian summer of tennis, opting to play Futures events in Egypt and Spain. He entered six tournaments during this stretch, making the final of three and winning one. In March, Kubler qualified for the main draw of Challenger events inPanama andBarranquilla, but failed to win a match at either tournament. In April, he competed in further Challenger events inSavannah andTallahassee, making the second round at both tournaments. In May, Kubler qualified for the ATP event inDüsseldorf, his firstATP World Tour event since the 2010 Australian Open. He won his first tour-level match by defeatingAlessandro Giannessi, before losing toDenis Istomin in the second round.^[19] In June, Kubler returned to the Futures circuit and defeated the number one seedKimmer Coppejans in the final of theNetherlands F3 in Breda. He broke into the top 200 for the first time on 25 August 2014 at No. 197. In September, Kubler made the quarter-final of theBiella Challenger and the following week, he won theSibiu Challenger defeatingRadu Albot in the final.^[20] This was the firstChallenger title of his career.^[21] In November, Kubler reached the final of theLima Challenger, losing toGuido Pella. On 24 November, Kubler reached a career high ranking of No. 136 before finishing the 2014 season with a world ranking of No. 140. Kubler played a total of 29 tournaments in 14 countries in 2014, all of which were on clay, due to his ongoing knee problems.^[22]

Kubler skipped the Australian summer of tennis for a fifth consecutive year. He instead played a variety of Challenger events across South and North America, his best result being a quarter-final appearance inSarasota. In May, Kubler attempted to qualify for theFrench Open, but lost in the first round toTim Pütz. This was Kubler's first appearance at a Grand Slam event in five years, albeit in the qualifying tournament. In June, Kubler entered the qualifying tournament atWimbledon, marking his first competitive appearance on the grass in three years.^[23] He defeatedRui Machado in straight sets in round 1 but was eliminated in the second round byAleksandr Nedovyesov, who went on to qualify for the main draw. In September, Kubler attempted to qualify for theUS Open, but lost in the opening round toFacundo Bagnis. This was Kubler's first competitive hard court appearance at any professional level in five years. Following the US Open, Kubler underwent knee surgery.^[10] A lacklustre year on the court and limited tournament play saw Kubler's ranking freefall to No. 544 to end the 2015 season.

After rehabbing from knee surgery, Kubler commenced the 2016 season by playing several Futures events in North America. He reached the quarter-final ofUSA F6 and semi-final ofUSA F8 in February. AtUSA F9 in March, Kubler retired in the first round. In May, just eight months after his last surgery, Kubler underwent the sixth knee operation of his career which side lined him for the rest of 2016.^[24] As a result, Kubler finished the year ranked outside the world's top 1000.

After a year out of the game and without a world ranking, Kubler returned to professional tennis in March at the Australia F2 and F3 Futures events in Canberra. In the lead up to the events, Kubler was frank about his future in the sport, commenting that another knee operation would likely mark the end of his career.^[25] After little success in Canberra, Kubler travelled to Europe in April for Futures events in Spain and Italy. Although Kubler managed to make a semi-final appearance atSpain F12, the highlight of his European trip was a doubles title with compatriotAlex Bolt at theItaly F14 tournament. This was Kubler's first professional trophy of any kind since 2014.

In October, Kubler won through qualifying at theTraralgon ATP Challenger and made a remarkable run to the final after defeating two former top 100 players inTaro Daniel andMatthew Ebden. He defeatedAlex Bolt in the final to claim his first Challenger title since 2014, which skyrocketed his ranking inside the world's top 350. Kubler was expected to compete in theAustralian Wildcard Playoff in December for a spot in the2018 Australian Open, but ultimately withdrew alongside a host of top-seeded players.^[26] Kubler finished the year ranked No. 341 in the world.

Kubler started his 2018 campaign at thePlayford Challenger in South Australia, which he won after qualifying. The victory saw Kubler move inside the world's top 250 for the first time since 2015. Following an impressive run of form and a huge improvement in ranking over the past six months, Kubler was awarded the final wildcard into the2018 Australian Open, his first Grand Slam appearance in eight years.^[27] Kubler faced 10th seedPablo Carreño Busta in the first round, where he lost in a highly competitive four-set match. Kubler showed plenty of promise in the match, leading by a break in both the first and third sets, but failed to capitalise on his opportunities. Following the Australian Open, Kubler competed in nine Challenger events across Australia and Asia from February to May. His best results through this stretch included three semi-final appearances at theBurnie International,Quijing International andSeoul Open. Kubler improved his world ranking to No. 160 following the Asian swing, his best world ranking in three years.

At theFrench Open, Kubler lost in the first round of qualifying toGonçalo Oliveira. Following the French Open, Kubler proceeded to lose in the first round at his next three Challenger tournaments before making a semi-final run at theIlkey Trophy, where he eventually lost toOscar Otte. The result saw Kubler return to the world's top 150 for the first time in more than three years.

Kubler then entered theWimbledon qualifying tournament and showed good form through his first two matches, defeatingArthur De Greef andAdam Pavlásek. In the final round of qualifying, Kubler defeated Canadian journeymanPeter Polansky in four-sets to qualify for theWimbledon main-draw for the first time in his career. Heading into Wimbledon, Kubler's remarkable comeback journey started to gain attention and his story was captured by the ATP in a video feature titled "The Comeback Story of Jason Kubler".^[28] Kubler faced unseeded ArgentinianGuido Pella in the first round, where he lost in four close sets. Following Wimbledon, Kubler entered theWinnipeg Challenger. As the fourth seed, Kubler dropped just one-set the whole tournament to claim his second Challenger title of the year, defeatingLucas Miedler in the final. The result saw Kubler move to No. 114 in the ATP rankings, eclipsing the career high he set way back in November 2014. To finish his Canadian tour, Kubler made the semi-final of theGatineau Challenger before withdrawing from theGranby Challenger with knee soreness.

Kubler then attempted to qualify for theWashington Open, an ATP 500 event. Despite losing in the final round of qualifying, Kubler was granted entry into the main draw as a lucky loser afterNick Kyrgios withdrew with a hip injury. Taking Kyrgios' seeding, Kubler progressed through to the second round via a bye before losing in a third set tie-breaker to fellow AustralianJames Duckworth. In August, Kubler was granted a reciprocal wildcard into theUS Open.^[29] In the lead up to the tournament, Kubler competed in theVancouver Open on the Challenger circuit, where he was defeated byDan Evans in the final. The result propelled Kubler into the top 100 for the first time, marking an 841 place ranking rise in the past 12 months.^[30] At theUS Open, Kubler upset 19th seedRoberto Bautista Agut in straight sets in the first round to claim the first main draw grand slam win of his career.^[31] In the second round, Kubler was forced to retire in the fourth-set against AmericanTaylor Fritz after rolling his ankle, which inadvertently caused further problems with his knees.^[32][33]

Kubler finished the season ranked No. 114 in the world.

Kubler was expected to compete in theBrisbane International, but withdrew from the event due to knee soreness.^[34] Kubler then attempted to qualify for theSydney International, but fell in the first round to third seedYoshihito Nishioka. For the second consecutive year, Kubler was awarded a wildcard into the2019 Australian Open.^[35] With limited tournament preparation, Kubler was defeated in the first round of the Australian Open by unseeded ItalianThomas Fabbiano in four sets.

Following a three-month break from the tour due to knee ailments,^[36] Kubler returned in mid-April at theKunming Challenger where he was defeated byJames Duckworth in the third round. At the2019 French Open, Kubler attempted to qualify but was defeated in the second round byViktor Troicki. AtWimbledon, Kubler won through his first two matches in qualifying but fell at the last hurdle toYasutaka Uchiyama in five sets. Following his poor results, Kubler's ranking dipped to No. 211 in the world. In July, Kubler made back-to-back finals on the Challenger tour inWinnetka andGatineau. Kubler lost the Winnetka final to top-seeded AmericanBradley Klahn but bounced back to win the Gatineau tournament without dropping a set. The result helped steer Kubler back inside the top 200 at No. 189 in the ATP rankings. Kubler was expected to contest the Challenger event inGranby, but withdrew due to a wrist injury.

Kubler played no further tournaments in 2019 and finished with the year ranked No. 261 in the world.

Following a first-round exit inAustralian Open qualifying, Kubler made a run to the semi-final of theBurnie Challenger before losing toYannick Hanfmann in straight sets. Kubler played three further Challenger events before the Tour was suspended until the end of July due to theCOVID-19 pandemic.^[37] Kubler returned to Australia following the suspension and predominately played tournaments in the UTR Pro Tennis Series. He ended the 2020 season ranked No. 259 in the world.

Kubler started the 2021 season at theMurray River Open on the ATP Tour after receiving a wildcard entry. At the tournament he scored an upset victory over 9th seeded ItalianLorenzo Sonego in three sets, his first in an ATP main draw since the2018 US Open. He lost in the second round toRičardas Berankis. Kubler then attempted to qualify for the2021 Australian Open, but was defeated in the second round bySergiy Stakhovsky.

In July, he reached the final of theNur-Sultan II Challenger, but retired early in the second set againstAndrey Kuznetsov. The following week at theLexington Challenger Kubler won the sixth Challenger title of his career, defeatingAlejandro Tabilo in three-sets.

In August 2021, Kubler tested positive forCOVID-19.^[38] He returned to the tour in September, but failed to progress beyond the second round in any tournament for the remainder of the season.

Kubler ended 2021 ranked No. 206 in the world.

Kubler attempted to qualify for the2022 Australian Open, but was eliminated in the second round byTomás Martín Etcheverry. Kubler was awarded a pair of wildcards into thedoubles andmixed doubles events however, with compatriotsChristopher O'Connell andJaimee Fourlis respectively. Kubler and O'Connell reached the third round as a pairing before withdrawing from the event. In the mixed doubles event, Kubler and Fourlis went on a fairy tale run to make the final and were bidding to become the first all-Australian duo to win the mixed doubles championship since 2013, but were ultimately defeated by fifth seedsKristina Mladenovic andIvan Dodig.^[39]

In late March and early April, Kubler won back-to-back Futures events in Canberra and in May made the semi-final of theZagreb Challenger. The results steered his ranking inside the top 200.

On his 29th birthday, Kublerqualified for the main draw of the2022 French Open for the first time, and was the only Australian to qualify at the 2022 event.^[40][41] Kubler scored his first main draw Grand Slam win since the2018 US Open when he defeatedDenis Kudla in straight sets. He lost in the second round to 10th seedCameron Norrie. Kubler moved to No. 119 in the world following Roland Garros.

In June, Kubler won the seventh Challenger title of his career atLittle Rock, defeating Taiwan'sWu Tung-lin in the final. The following week he reached the final of theOrlando Challenger, but retired during the third-set due to stomach issues.^[42] The results propelled Kubler back in the top 100 for the first time since October 2018, when he peaked at world No. 91.^[43]

After narrowly missing out on direct entry intoWimbledon, Kubler entered thequalifying tournament as the second seed. He needed a deciding set in his first two matches to progress, but cruised pastElias Ymer in straight sets during the final round to confirm his place in themain draw. It was the second time Kubler qualified for Wimbledon, having done so in 2018.^[44] Kubler faced British 28th seedDan Evans in the first round, defeating the home crowd favourite in straight sets. This was Kubler's first main draw win at Wimbledon in his career.^[45] In the second round, he defeated fellow qualifierDennis Novak in straight sets to reach the third round of a Grand Slam for the first time in his career. His dream run continued in the third round, defeatingJack Sock in five sets to reach the second week of a Grand Slam for the first time.^[46] In the fourth round, Kubler was defeated by 11th seeded AmericanTaylor Fritz in straight sets. Kubler's result at Wimbledon earned him the biggest payday of his career, taking home£190,000 (US$230,000).^[47] Despite his fourth round appearance, Kubler slid outside the top 100 due to the removal of ranking points at the2022 Championships. TheATP,WTA andITF all stripped the tournament of ranking points, following theAll England Lawn Tennis Club's decision to banRussian and Belarusian players from competing.^[48]

At theHall of Fame Open Kubler defeated compatriotJordan Thompson in straight sets in the first round. He then defeated top seed and World No. 9Félix Auger-Aliassime in three sets to reach his first ATP quarterfinal, saving a match point in the process during the final set tiebreak. The victory over Auger-Aliassime also marked his first career Top 10 win.^[49] He then defeated compatriotJames Duckworth in straight sets to reach his maiden ATP semifinal, where he lost to 3rd seedAlexander Bublik. Later that month, at the2022 Atlanta Open, Kubler reached the final in doubles with compatriotJohn Peers, but lost to second seeded Australian duoThanasi Kokkinakis andNick Kyrgios.

At theUS Open, Kubler defeatedMikael Ymer in four sets in the first round, his first main draw win at the event since 2018. In the second round, Kubler was defeated by American 22nd seed and eventual semi-finalistFrances Tiafoe in straight sets. In September, at theSan Diego Open, Kubler reached his second ATP doubles final of the season, this time with fellow AustralianLuke Saville. They lost in the final to American duoNathaniel Lammons andJackson Withrow in straight sets.

Kubler finished the 2022 season ranked No. 107 in the world, the best end-of-year ranking of his career.

Kubler began his 2023 season representing Australia at the inaugural2023 United Cup, following the withdrawal ofNick Kyrgios.^[50] During the group stage, he recorded singles victories over world No. 27Dan Evans and world No. 39Albert Ramos Viñolas. Despite his contributions, Australia did not advance beyond the group stage. Kubler’s performance, however, saw him return to the top 100, reaching a then-career-high singles ranking of No. 86. At theAdelaide International 2 tournament, Kubler reentered the main draw as a wildcard and defeatedTomás Martín Etcheverry in the first round before falling to sixth seedMiomir Kecmanovic in three tight sets.

At theAustralian Open, Kubler made his first main draw appearance at the tournament in four years after receiving a wildcard entry.^[51] In the first round, he secured his first main draw victory at the event, 13 years after his tournament debut, by defeatingSebastián Báez in straight sets.^[52] He exited the tournament after losing in the second round to 18th seedKaren Khachanov. In thedoubles event, Kubler partnered with fellow AustralianRinky Hijikata. Entering the tournament as wildcards, the pair made a remarkable run to the title, defeating three seeded teams: sixth seedsLloyd Glasspool andHarri Heliövaara, top seedsWesley Koolhof andNeal Skupski,^[53] and eighth seedsMarcel Granollers andHoracio Zeballos. They also saved a match point in the third round againstTomislav Brkić andGonzalo Escobar.^[54] In the final, they overcameHugo Nys andJan Zieliński to win their maiden Grand Slam title. Kubler and Hijikata became only the fifth unseeded team, and just the second wildcard pairing, to win the Australian Open men’s doubles title in the Open Era.^[55] The victory propelled Kubler 130 places up the doubles rankings to a career-high of No. 33. He also reached a new career-best singles ranking of No. 79 following the tournament.

In March, Kubler made his Masters 1000 debut at theBNP Paribas Open in Indian Wells. He defeatedLorenzo Sonego in the first round and advanced past 21st seedGrigor Dimitrov, who retired during their match, before falling to 14th seedFrances Tiafoe in the third round.

In April, Kubler reached the quarterfinals of theU.S. Men's Clay Court Championships in Houston, recording wins overFernando Verdasco andDaniel Elahi Galán. Following the2023 Barcelona Open, he reached a career-high singles ranking of No. 63 on 24 April. In doubles, he partnered with his compatriotAlex de Minaur to reach the quarterfinals at theItalian Open, climbing to a new career-high doubles ranking of No. 27 following the tournament.

At theFrench Open, Kubler won his first-round match before being defeated in straight sets byFabio Fognini in the second round. In June, he captured his eighth career Challenger title at theIlkley Trophy, defeating third seedSebastian Ofner in the final.

Kubler’sUS Open campaign was cut short when he retired from his first-round match againstMatteo Arnaldi due to a right knee injury.^[56] He returned later in the season to compete in the doubles event at theATP Finals in Turin alongside Hijikata. The duo, however, were unable to progress past the round-robin stage.

Kubler concluded the season with career-high year-end ATP rankings of No. 102 in singles and No. 30 in doubles.

Kubler commenced his 2024 season at the Brisbane International, losing in the second round toRafael Nadal in straight sets. At the Australian Open, Kubler entered as a wildcard and battled through a gruelling five-set epic lasting four hours and 59 minutes, ultimately falling toDaniel Elahi Galán in the first round.^[57]

After being sidelined for 10 months due to ongoing knee issues, Kubler made his return to competition on the ITF World Tennis Tour in November. He played two events in Brisbane and Carrara, making the final in the latter.

As a result of his extended absence from competition, Kubler's world ranking dropped sharply, finishing the year at No. 638 in singles, his lowest year-end ranking since 2016.

Kubler attempted to qualify for the2025 Australian Open but fell in the opening round toThiago Monteiro, causing his ranking to tumble outside the Top 800. With limited opportunities at higher-level events, he turned to the ITF World Tennis Tour, where he found immediate success. In February and March, he claimed back-to-back titles in Burnie and Launceston, the latter capped by a win overCruz Hewitt, son of Australian tennis legendLleyton Hewitt in the final. Kubler’s resurgence continued in April with his ninth career Challenger title inGwanju, followed by another ITF title in Baotou. His impressive run of form sparked a remarkable rise in the rankings, surging more than 600 places to reach No. 210 in just four months.

In May, Kubler attempted to qualify for theFrench Open but was defeated in the second round of qualifying byJames Trotter.

Current through the2026 Australian Open

Result	Year	Tournament	Surface	Partner	Opponents	Score
Win	2023	Australian Open	Hard	Rinky Hijikata	Hugo Nys Jan Zieliński	6–4, 7–6(7–4)
Loss	2026	Australian Open	Hard	Marc Polmans	Christian Harrison Neal Skupski	6–7(4–7), 4–6

Result	Year	Tournament	Surface	Partner	Opponents	Score
Loss	2022	Australian Open	Hard	Jaimee Fourlis	Kristina Mladenovic Ivan Dodig	3–6, 4–6

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Jul 2022	Atlanta Open, US	ATP 250	Hard	John Peers	Thanasi Kokkinakis Nick Kyrgios	6–7(4–7), 5–7
Loss	0–2	Sep 2022	San Diego Open, US	ATP 250	Hard	Luke Saville	Nathaniel Lammons Jackson Withrow	6–7(5–7), 2–6
Win	1–2	Jan 2023	Australian Open, Australia	Grand Slam	Hard	Rinky Hijikata	Hugo Nys Jan Zieliński	6–4, 7–6(7–4)
Loss	1–3	Jan 2026	Australian Open, Australia	Grand Slam	Hard	Marc Polmans	Christian Harrison Neal Skupski	6–7(4–7), 4–6

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Sep 2014	Sibiu Open, Romania	Challenger	Clay	Radu Albot	6–4, 6–1
Loss	1–1	Nov 2014	Lima Challenger, Peru	Challenger	Clay	Guido Pella	2–6, 4–6
Win	2–1	Oct 2017	Traralgon Challenger, Australia	Challenger	Hard	Alex Bolt	2–6, 7–6(8–6), 7–6(7–3)
Win	3–1	Jan 2018	Playford International, Australia	Challenger	Hard	Brayden Schnur	6–4, 6–2
Win	4–1	Jul 2018	Winnipeg Challenger, Canada	Challenger	Hard	Lucas Miedler	6–1, 6–1
Loss	4–2	Jul 2018	Vancouver Open, Canada	Challenger	Hard	Dan Evans	6–4, 5–7, 6–7(3–7)
Loss	4–3	Jul 2019	Nielson Pro Championships, US	Challenger	Hard	Bradley Klahn	2–6, 5–7
Win	5–3	Jul 2019	Gatineau Challenger, Canada	Challenger	Hard	Enzo Couacaud	6–4, 6–4
Loss	5–4	Jul 2021	President's Cup, Kazakhstan	Challenger	Hard	Andrey Kuznetsov	3–6, 1–2 ret.
Win	6–4	Jul 2021	Lexington Challenger, US	Challenger	Hard	Alejandro Tabilo	7–5, 6–7(2–7), 7–5
Win	7–4	Jun 2022	Little Rock Challenger, US	Challenger	Hard	Wu Tung-lin	6–0, 6–2
Loss	7–5	Jun 2022	Orlando Open, US	Challenger	Hard	Wu Yibing	7–6(7–5), 4–6, 1–3 ret.
Win	8–5	Jun 2023	Ilkley Trophy, United Kingdom	Challenger	Grass	Sebastian Ofner	6–4, 6–4
Loss	8–6	Feb 2025	Queensland International, Australia	Challenger	Hard	Adam Walton	6–7(6–8), 6–7(4–7)
Win	9–6	Apr 2025	Gwangju Open, South Korea	Challenger	Hard	Alibek Kachmazov	7–5, 6–7(7–9), 6–3
Loss	0–1	May 2010	F3 Ipswich, Australia	Futures	Clay	Brydan Klein	3–6, 4–6
Win	1–1	Oct 2011	F28 Birmingham, US	Futures	Clay	Yoshihito Nishioka	6–3, 6–2
Win	2–1	Nov 2011	F29 Niceville, US	Futures	Clay	Roman Vögeli	6–2, 6–4
Loss	2–2	Jan 2012	F1 Plantation, US	Futures	Clay	Jack Sock	1–6, 6–7(5–7)
Loss	2–3	Jan 2012	F3 Weston, US	Futures	Clay	Brian Baker	5–7, 3–6
Win	3–3	Feb 2012	F4 Palm Coast, US	Futures	Clay	Rhyne Williams	6–2, 6–3
Loss	3–4	Mar 2012	F3 Ipswich, Australia	Futures	Clay	Samuel Groth	7–5, 3–6, 2–6
Win	4–4	Apr 2012	F4 Bundaberg, Australia	Futures	Clay	John Millman	6–4, 1–6, 6–1
Loss	4–5	Jul 2012	F25 Izmir, Turkey	Futures	Clay	Lorenzo Giustino	4–6, 6–3, 5–7
Loss	4–6	Sep 2012	F30 Sevilla, Spain	Futures	Clay	Gerard Granollers Pujol	0–6, 6–4, 1–6
Loss	4–7	Mar 2013	F5 Bundaberg, Australia	Futures	Clay	James Duckworth	6–7(9–11), 2–6
Win	5–7	Apr 2013	F4 Padova, Italy	Futures	Clay	Jordi Samper Montaña	6–1, 6–4
Win	6–7	Nov 2013	F37 Madrid, Spain	Futures	Clay	Jean-Marc Werner	7–6(7–5), 6–0
Win	7–7	Dec 2013	F36 Sharm El Sheikh, Egypt	Futures	Clay	Sherif Sabry	7–5, 6–3
Loss	7–8	Feb 2014	F3 Sharm El Sheikh, Egypt	Futures	Clay	Stefano Travaglia	0–6, 0–6
Win	8–8	Feb 2014	F1 Paguera, Spain	Futures	Clay	Peter Heller	6–4, 6–4
Loss	8–9	Feb 2014	F2 Paguera, Spain	Futures	Clay	Oriol Roca Batalla	6–2, 3–6, 3–6
Win	9–9	Jun 2014	F3 Breda, Netherlands	Futures	Clay	Kimmer Coppejans	6–3, 6–7(8–6), 6–3
Win	10–9	Jul 2014	F24 Fano, Italy	Futures	Clay	Daniele Giorgini	6–1, 5–7, 6–3
Loss	10–10	Oct 2017	F6 Toowoomba, Australia	Futures	Hard	Andrew Harris	4–6, 0–6
Loss	10–11	Oct 2017	F7 Cairns, Australia	Futures	Hard	Dayne Kelly	3–6, 6–7
Win	11–11	Jun 2021	M15 Champaign, United States	WTT	Hard	Gabriel Diallo	6–2, 6–1
Win	12–11	Mar 2022	M25 Canberra, Australia	WTT	Clay	Tristan Schoolkate	7–6(7–3), 6–1
Win	13–11	Apr 2022	M25 Canberra 2, Australia	WTT	Clay	Omar Jasika	1–6, 6–3, 7–6(7–4)
Loss	13–12	Dec 2024	M25 Carrara, Australia	WTT	Hard	Matthew Dellavedova	6–3, 3–6, 2–6
Win	14–12	Feb 2025	M25 Burnie, Australia	WTT	Hard	Omar Jasika	6–3, 6–2
Win	15–12	Mar 2025	M25 Launceston, Australia	WTT	Hard	Cruz Hewitt	6–2, 6–4
Win	16–12	May 2025	M25 Baotou, China	WTT	Clay	Bai Yan	6–1, 6–1

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Jan 2018	Playford International, Australia	Challenger	Hard	Maverick Banes	Mackenzie McDonald Tommy Paul	6–7(4–7), 4–6
Win	1–1	May 2023	Open du Pays d'Aix, France	Challenger	Clay	John Peers	Nuno Borges Francisco Cabral	6–7(5–7), 6–4, [10–7]
Win	1–0	Oct 2013	F35 El Prat de Llobregat, Spain	Futures	Clay	Pol Toledo Bagué	Jordi Muñoz Abreu Mark Vervoort	6–2, 4–6, [10–6]
Win	2–0	Dec 2013	F36 Sharm El Sheikh, Egypt	Futures	Clay	Jean-Marc Werner	Dmytro Badanov Yan Sabanin	7–6(7–2), 7–6(8–6)
Win	3–0	Feb 2014	F2 Peguera, Spain	Futures	Clay	Pol Toledo Bagué	Oriol Roca Batalla Jean-Marc Werner	6–1, 6–3
Win	4–0	Mar 2014	F5 Reus, Spain	Futures	Clay	Pol Toledo Bagué	Ivan Gómez Mantilla Gonçalo Oliveira	6–4, 6–1
Win	5–0	May 2017	F14 Frascati, Italy	Futures	Clay	Alex Bolt	Federico Maccari Andrea Vavassori	6–1, 7–6(8–6)

• Kubler has a 1–1 record against players who were ranked in the top 10 at the time the match was played.

#	Player	Rank	Event	Surface	Rd	Score	JKR
2022
1.	Félix Auger-Aliassime	9	Hall of Fame Newport Open, US	Grass	2R	4–6, 6–3, 7–6(7–4)	102

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