Viktor Troicki, born 10 February 1986, is a Serbian professional tennis player. He won his first ATP singles title at the 2010 Kremlin Cup, and his second and third ATP singles titles at the 2015 and 2016 Apia International Sydney. His biggest achievement was career-high singles ranking of world No. 12 in June 2011, along with winning the deciding rubber in Serbia’s Davis Cup final against France in 2010. Since then, every Davis Cup he’s attended, he has contributed to Serbia resulting in a quarterfinal or better. He is known for his strong serve, which he can hit at up to 240 km/h (149 mph), and for serving a 12-month doping ban in 2013–14 for missing a drug test.
By winning the inaugural ATP Cup in 2020, Troicki became the first player in history to win all three major team competitions (Davis Cup in 2010 and World Team Cup in 2009 and 2012).