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| 2015 Citi Open | ||||
|---|---|---|---|---|
| Date | August 3–9 | |||
| Edition | 47th (men) / 5th (women) | |||
| Category | ATP World Tour 500 (men) WTA International (women) | |||
| Surface | Hard / outdoor | |||
| Location | Washington, D.C., United States | |||
| Champions | ||||
| Men's singles | ||||
 Kei Nishikori | ||||
| Women's singles | ||||
 Sloane Stephens | ||||
| Men's doubles | ||||
| Bob Bryan /Mike Bryan | ||||
| Women's doubles | ||||
 Belinda Bencic / Kristina Mladenovic | ||||
| ||||
The2015Citi Open was atennis tournament played on outdoorhard courts. It was the 47th edition (for the men) and the 5th edition (for the women) of theWashington Open. The event was part of theATP World Tour 500 series of the2015 ATP World Tour, and of theWTA International tournaments of the2015 WTA Tour. It took place at theWilliam H.G. FitzGerald Tennis Center in Washington, D.C., United States, from August 3 to August 9, 2015.
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 64 | Q | Q2 | Q1 |
| Men's singles | 500 | 300 | 180 | 90 | 45 | 20 | 0 | 10 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|
| Men's doubles | 0 | — | — | — | ||||||
| Women's singles | 280 | 180 | 110 | 60 | 30 | 1 | — | 18 | 12 | 1 |
| Women's doubles | 1 | — | — | — | — | — |
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 641 | Q2 | Q1 |
| Men's singles | $316,400 | $142,650 | $67,570 | $32,605 | $16,625 | $9,150 | $5,325 | $850 | $440 |
| Men's doubles * | $93,460 | $42,180 | $19,890 | $9,610 | $4,920 | — | — | — | — |
| Women's singles | $43,000 | $21,400 | $11,300 | $6,200 | $3,420 | $2,220 | — | $1,285 | $750 |
| Women's doubles * | $12,300 | $6,400 | $3,435 | $1,820 | $960 | — | — | — | — |
1 Qualifiers prize money is also the Round of 64 prize money
* per team
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 GBR | Andy Murray | 3 | 1 |
| JPN | Kei Nishikori | 5 | 2 |
 CRO | Marin Čilić | 9 | 3 |
| FRA | Richard Gasquet | 13 | 4 |
 RSA | Kevin Anderson | 15 | 5 |
 BUL | Grigor Dimitrov | 16 | 6 |
 ESP | Feliciano López | 18 | 7 |
| USA | John Isner | 19 | 8 |
 SRB | Viktor Troicki | 20 | 9 |
| CRO | Ivo Karlović | 22 | 10 |
 AUS | Bernard Tomic | 25 | 11 |
 CAN | Vasek Pospisil | 29 | 12 |
| USA | Sam Querrey | 30 | 13 |
 URU | Pablo Cuevas | 31 | 14 |
| USA | Jack Sock | 35 | 15 |
 ARG | Leonardo Mayer | 36 | 16 |
The following players receivedwild cards into the main singles draw:
The following players received entry from the singlesqualifying draw:
The following player received entry as lucky loser:
Marcos Baghdatis → replaced byIvan DodigThanasi Kokkinakis → replaced byGo SoedaAdrian Mannarino → replaced by
Lukáš LackoJanko Tipsarević → replaced by
Ričardas Berankis| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| USA | Bob Bryan | USA | Mike Bryan | 1 | 1 |
| CRO | Ivan Dodig |  BRA | Marcelo Melo | 7 | 2 |
 IND | Rohan Bopanna |  ROU | Florin Mergea | 18 | 3 |
 POL | Marcin Matkowski | SRB | Nenad Zimonjić | 21 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the doubles qualifying draw:
The following pair received entry as lucky loser:
Pablo Cuevas (back injury)| Country | Player | Rank1 | Seed |
|---|---|---|---|
 RUS | Ekaterina Makarova | 11 | 1 |
| AUS | Samantha Stosur | 21 | 2 |
| SUI | Belinda Bencic | 22 | 3 |
| RUS | Svetlana Kuznetsova | 24 | 4 |
| FRA | Alizé Cornet | 28 | 5 |
| ROU | Irina-Camelia Begu | 29 | 6 |
| USA | CoCo Vandeweghe | 32 | 7 |
 KAZ | Zarina Diyas | 33 | 8 |
The following players receivedwild cards into the main singles draw:
The following players received entry from the singlesqualifying draw:
Victoria Azarenka → replaced by
Polona HercogEugenie Bouchard → replaced byLauren Davis
Sara Errani → replaced byIrina FalconiDaniela Hantuchová → replaced byLara Arruabarrena| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| RUS | Alla Kudryavtseva | RUS | Anastasia Pavlyuchenkova | 52 | 1 |
| AUS | Anastasia Rodionova | AUS | Arina Rodionova | 64 | 2 |
| ESP | Lara Arruabarrena | SLO | Andreja Klepač | 72 | 3 |
| SUI | Belinda Bencic | FRA | Kristina Mladenovic | 101 | 4 |
The following pair received a wildcard into the doubles main draw:
Kei Nishikori def.John Isner, 4–6, 6–4, 6–4Sloane Stephens def.Anastasia Pavlyuchenkova, 6–1, 6–2Bob Bryan /Mike Bryan def.Ivan Dodig /Marcelo Melo, 6–4, 6–2Belinda Bencic /Kristina Mladenovic def.Lara Arruabarrena /Andreja Klepač, 7–5, 7–6(9–7)
