Stan Wawrinka confirmed to play at ATP World Tour Finals in London after beating Novak Djokovic in US Open final
Australian Open and French Open winner Djokovic, Wimbledon champion Andy Murray and Wawrinka are the first three players all confirmed for the season-ender at the O2 Arena.
Stan Wawrinka confirmed to play at ATP World Tour Finals in London after beating Novak Djokovic in US Open final
