Kei Nishikori of Japan hits a return to Stan Wawrinka of Switzerland during their semifinal round match on the twelfth day of the US Open Tennis Championships at the USTA National Tennis Center in Flushing Meadows, New York, USA, 09 September 2016. The US Open runs through September 11. EPA/JOHN G. MABANGLO
Stan Wawrinka of Switzerland hits a return to Kei Nishikori of Japan during their semifinal round match on the twelfth day of the US Open Tennis Championships at the USTA National Tennis Center in Flushing Meadows, New York, USA, 09 September 2016. The US Open runs through September 11. EPA/ANDREW GOMBERT
Kei Nishikori of Japan hits a return to Stan Wawrinka of Switzerland during their semifinal round match on the twelfth day of the US Open Tennis Championships at the USTA National Tennis Center in Flushing Meadows, New York, USA, 09 September 2016. The US Open runs through September 11. EPA/VINCENT LAFORET
Stan Wawrinka of Switzerland hits a return to Kei Nishikori of Japan during their semifinal round match on the twelfth day of the US Open Tennis Championships at the USTA National Tennis Center in Flushing Meadows, New York, USA, 09 September 2016. The US Open runs through September 11. EPA/JOHN G. MABANGLO
Kei Nishikori of Japan hits a return to Stan Wawrinka of Switzerland during their semifinal round match on the twelfth day of the US Open Tennis Championships at the USTA National Tennis Center in Flushing Meadows, New York, USA, 09 September 2016. The US Open runs through September 11. EPA/ANDREW GOMBERT
Stan Wawrinka of Switzerland (R) and Kei Nishikori of Japan at the net after their semifinal round match on the twelfth day of the US Open Tennis Championships at the USTA National Tennis Center in Flushing Meadows, New York, USA, 09 September 2016. The US Open runs through September 11. EPA/JOHN G. MABANGLO
Topics: 10sballs, 2016 US Open, Atp World Tour, Flushing Meadows, Kei Nishikori, Photo Gallery, Sports, Stan Wawrinka, Tennis, US Open tennis