Stanislas Wawrinka of Switzerland in his Men's Semi Final against Jo-Wilfried Tsonga of France on day thirteen of the 2015 French Open at Roland Garros on June 5, 2015 in Paris, France. (Photo by Antoine Gyori/Corbis via Getty Images)
Stanislas Wawrinka of Switzerland in his Men's Semi Final against Jo-Wilfried Tsonga of France on day thirteen of the 2015 French Open at Roland Garros on June 5, 2015 in Paris, France. (Photo by Antoine Gyori/Corbis via Getty Images)