Men's and women's semifinal action at the French Open (19 images)

Novak Djokovic of Serbia enlists the help of the ballboys and ballgirls in acknowledging the crowd after winning his French Open men's semifinal match against Dominic Thiem of Austria at Roland Garros in Paris on June 3, 2016. Djokovic defeated Thiem 6-2, 6-1, 6-4 to advance to the finals. Photo by David Silpa/UPI

American Serena Williams acknowledges the crowd after winning her French Open women's semifinal match against Kiki Bertens of the Netherlands at Roland Garros in Paris on June 3, 2016. Williams defeated Bertens 7-6 (7), 6-4 to advance to the finals. Photo by David Silpa/UPI

Leonardo DiCaprio watches the French Open men's semifinal match between Andy Murray of the United Kingdom and Stan Wawrinka of Switzerland at Roland Garros in Paris on June 3, 2016. Photo by David Silpa/UPI

Novak Djokovic of Serbia hits a shot during his French Open men's semifinal match against Dominic Thiem of Austria at Roland Garros in Paris on June 3, 2016. Djokovic defeated Thiem 6-2, 6-1, 6-4 to advance to the finals. Photo by David Silpa/UPI