In his 25-year-long playing career, Király spent most of his career in Germany and England. He signed forHertha BSC in 1997, going on to appear in 198 official games, and played for1860 Munich later in his career. In England, he representedCrystal Palace,Burnley, andFulham and had loan spells withWest Ham United, andAston Villa. In 2015, he re-joined his hometown teamHaladás.
Throughout his career, Király was known for wearing a recognisable pair of greytracksuit bottoms instead of shorts in almost every match he played. "I will never take off my sweatpants" he swore.
At Hertha, he was initially the second-choice keeper, but after a streak of seven matches without a win, he was chosen over the first-choice goalkeeperChristian Fiedler for Hertha's home match against1. FC Köln on 28 September 1997 in which they managed their first Bundesliga victory that season. He subsequently became the first-choice keeper and Fiedler did not appear in the Bundesliga for more than two years, until February 2000, when Király missed seven league matches due to an injury. He also appeared in 10UEFA Champions League matches for Hertha in the 1999–2000 season of the competition.
However, afterHans Meyer was named the new Hertha coach in the winter break of the 2003–04 Bundesliga season, Király lost his place in the starting line-up and Fiedler was named the first-choice keeper after spending most of the previous six years on the bench. Király was then told his contract would only be renewed if he took a pay cut. In the spring of 2004, he only played the last 14 minutes of Hertha's final Bundesliga match of the season, against 1. FC Köln; the same club against whom he had made his Bundesliga debut. Overall he played almost 200 top-flight matches for Hertha.[5]
Crystal Palace made Király their first signing for the 2004–05 season; but also signed Argentine goalkeeperJulián Speroni later that pre-season and it was he who was initially installed as the first-choice keeper. Király made his debut for Palace in theLeague Cup game at home toHartlepool United where his performance, along with the poor form of Speroni, resulted in his promotion to the first choice in Palace goal. During the game with Hartlepool, Király was forced off when his joggers were ripped on one side, and his backup shorts were insufficient in providing heat to his legs during the game. He remained out for 3 games whilst he located a pair of backup shorts fit for use. He stayed in the first team for over 12 months before being rested over the Christmas period in 2005, making 32Premier League appearances before Palace were relegated back to theChampionship following the 2004–05 season. After the rest, he went straight back into the Palace side, and kept his place for the remainder of the 2005–06 season in which he made 43 appearances in the Championship.
On 18 May 2006, Király made a transfer request. With the signing ofScott Flinders, it seemed he would leave Crystal Palace and his chances of securing a move to the Premier League seemed to increase on 30 May, when he impressed forHungary in their 3–1 defeat toEngland, saving a penalty byFrank Lampard in the process. However, Bob Dowie, Palace's director of football, revealed that the club had received no offers for the keeper's services, and thus he started a third season at Palace.[6]
New managerPeter Taylor installed Király as his number-one choice in goal, with Flinders as his backup, but later on in the season Flinders was recalled from a loan spell and replaced Király in the starting line-up. However, Flinders only played two games, conceding seven goals and giving Király a quick return to the first team.
Király had a two-week loan spell at Premier League sideWest Ham United from mid-November to early December 2006 in which he did not make an appearance, spending three matches on the bench as an unused substitute.
He then returned to Palace, but almost immediately left for another loan spell atAston Villa for one month, following injuries to Villa's regular keepersThomas Sørensen andStuart Taylor. At Villa, Király eventually managed a return to playing Premier League football after an eighteen-month absence following Palace's relegation. He was given his Villa debut on 16 December 2006 in their 1–0 defeat toBolton Wanderers atVilla Park. The last match in his loan spell at Villa was their third-roundFA Cup match againstManchester United atOld Trafford on 7 January 2007. After an otherwise strong performance, Király's late error gifted Manchester United a 2–1 victory.[7] Following Sørensen and Taylor's return to fitness, he was allowed to return to Palace on 12 January 2007.
By the end of January 2007, he made a return in the Palace goal, with his first league match being a goalless draw away atSunderland on 30 January 2007. Király continued in the team until the end of the season, when Speroni stepped in with three games remaining. After the last game, Taylor announced that Király had left the club in the week before the match.
In June 2009, Király was released by Burnley at the end of his contract alongsideSteve Jones andAlan Mahon.[10] On 3 June 2009, signed a three-year contract withTSV 1860 Munich.
After the second match of the2014–15 season Király was suspended to the second squad along with his teammatesVitus Eicher,Daniel Adlung,Yannick Stark and captainJulian Weigl. Király had assaultedGary Kagelmacher during a match, while the other four players had been out drinking late at night and were overheard talking negatively about the club.[11][12]
On 28 August 2014, it was announced that Király had signed for the EnglishChampionship sideFulham.[13][14] In September 2014, againstReading, Király made his Fulham debut, and was in action multiple times, but the pressure inevitably told, with two goals against him within an hour. Király tipped a header from home substitutePavel Pogrebnyak – a former Fulham player – against the crossbar andJake Taylor drove narrowly wide from distance. But Fulham could not hold out at 2–0 until the end. In the 85th minute, substituteNick Blackman ran through, went by Király and slotted the ball home.
Király made his debut for theHungary national team againstAustria on 25 March 1998 inErnst-Happel-Stadion.[16] After only four minutes, he saved a penalty from Austria's all-time top scorerToni Polster, and Hungary won 3–2. During the2006 FIFA World Cup qualifying, Király was the only player in the Hungarian squad to appear in all of their ten qualifying matches. He had not played for the national team since the embarrassing 2–1 defeat by Malta on 11 October 2006, but was called up to the squad for the World Cup Qualifiers againstSweden andPortugal in September 2009 and has remained in the squad despite being second choice behindGábor Babos.
On 14 June 2016, Király played in the first group match in a 2–0 victory overAustria at theUEFA Euro 2016 Group F match atNouveau Stade de Bordeaux,Bordeaux, France.[21] Hence, he became the oldest player to feature in the competition, breakingLothar Matthäus' record.[22] Three days later on 18 June 2016 he played in a 1–1 draw againstIceland at theStade Vélodrome,Marseille.[23] He also played in the last group match in a 3–3 draw againstPortugal at theParc Olympique Lyonnais,Lyon on 22 June 2016.[24] He later played in a 4–0 defeat againstBelgium in the round of 16, in which he managed to extend his record as the oldest player to appear in the competition, aged 40 years and 86 days.[25] He announced his retirement from international football on 2 August 2016.[26] However, on 15 November 2016, he played his testimonial match againstSweden. He played the first 30 minutes in 2–0 loss.
Throughout his career, Király has stood out for his gimmick of wearing a recognisable pair of greytracksuit bottoms instead of shorts in almost every match he has played since 1996;[27] several commentators have taken note of his unusual attire.[28] He said in an interview that they are grey in colour because they bring him good luck.[29]
In an interview withUEFA.com, he said that "I'm a goalie, not a top model. It's essentially a question of comfort. I've played on clay or grass that's been frozen in winter; it makes your legs hurt when you dive so jogging bottoms seemed obvious. I always take a size above to facilitate movement. I tried shorts during my spells in Germany and England but it didn't suit me. The end result is more important than your look."[30]