Stanislas Wawrinka is a Swiss professional tennis player. He is currently the Swiss No. 2 and World No. 4, as of 7th July 2014. He first attained this ranking on 27 January 2014 as a result of winning his first Grand Slam event, the 2014 Australian Open. He also reached the semifinals of the 2013 US Open where he lost to Novak Djokovic in five sets. In the 2008 Olympics Wawrinka teamed with Roger Federer in the men's doubles. They beat the favoured American twins Bob and Mike Bryan in the semifinals in straight sets, then in the final defeated Simon Aspelin and Thomas Johansson of Sweden in four sets to win the gold medal.