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Sergiy Eduardovych Stakhovsky (Ukrainian: Сергій Едуардович Стаховський, pronounced [serˈɦij stɐˈxɔu̯sʲkɪj]; born January 6, 1986) is a Ukrainian former professional tennis player. Stakhovsky turned professional in 2003 and played mostly at the Challenger level from 2005 to 2008. His career-high rankings were World No. 31 in singles (September 2010) and No. 33 in doubles (June 2011).Stakhovsky won his first career title in March 2008, as a lucky loser ranked no. 209, defeating top seed Ivan Ljubičić in the final, thus becoming the first lucky loser to win a title since Christian Miniussi in 1991. He is the elder brother of tennis player Leonard Stakhovsky. He was coached by Burghard Riehemann. He is perhaps best known for beating eight-time winner and defending champion Roger Federer in the second round of the 2013 Wimbledon Championships, ending the latter's record run of 36 consecutive major quarterfinals.
Stakhovsky retired from tennis in January 2022, and following the Russian invasion of Ukraine he joined the Ukrainian Army.