Stan Wawrinka, one of few players to win multiple Grand Slams in era dominated by Federer, Nadal and Djokovic, retires.
Former world No 3 Stan Wawrinka ends career in home match defeat in Basel
Source: Al Jazeera English
Stan Wawrinka, one of few players to win multiple Grand Slams in era dominated by Federer, Nadal and Djokovic, retires.