Table:
text: Kei Nishikori
Singles performance timeline
Singles performance timeline
Tournament _2008 _2009 _2010 _2011 _2012 Win_
Grand Slam tournaments Grand Slam tournaments Grand Slam tournaments Grand Slam tournaments Grand Slam tournaments Grand Slam tournaments Grand Slam tournaments
Australian Open A 1R A 3R QF 69.23
French Open Q2 A 2R 2R A 62.50
Wimbledon 1R A 1R 1R 3R 44.44
US Open 4R A 3R 1R 3R 63.64
Win–Loss 3–2 0–1 3–3 3–4 8–3 60.98
Olympic Games Olympic Games Olympic Games Olympic Games Olympic Games Olympic Games Olympic Games
Summer Olympics 1R Not Held Not Held Not Held QF 60.00

Question: What is the winning percentage for Kei Nishikori from the 2012 Olympics singles performance timeline?