Stanislas Wawrinka is a Swiss professional tennis player. He also holds German citizenship as his father is German. His career-high singles ranking is World No. 9, achieved on 9 June 2008. He considers clay his best surface and his serve and volley his best shot. He won the Gold medal for Switzerland in the men's doubles event at the 2008 Summer Olympics in Beijing, partnering Roger Federer, by beating Swedish team Simon Aspelin/Thomas Johansson in the final. They were also honoured with the 2008 Swiss Team of the Year Award.