Monfils, Sharapova and Federer all in action at Roland Garros
Germany's Benjamin Becker celebrates after defeating Spain's Fernando Verdasco during the men's second round at the 2015 French Open in Paris on May 27, 2015.MIGUEL MEDINA/AFP / Getty Images
Brazil's Thomaz Belluci returns the ball to Japan's Kei Nishikori.KENZO TRIBOUILLARD/AFP / Getty Images
France's Alize Cornet returns the ball to Romania's Alexandra Dulgheru during the women's second round at the 2015 French Open in Paris on May 27, 2015.PATRICK KOVARIK/AFP / Getty Images
Simona Halep of Romania returns a shot in her match against Mirjana Lucic-Baroni of Croatia.Clive Mason/Getty Images
Japan's Kei Nishikori returns the ball to Brazil's Thomaz Belluci.KENZO TRIBOUILLARD/AFP / Getty Images
Italy's Fabio Fognini returns the ball to France's Benoit Paire during the men's second round.KENZO TRIBOUILLARD/AFP / Getty Images
Mirjana Lucic-Baroni of Croatia celebrates after beating Simona Halep of Romania.VINCENT KESSLER/Reuters
A ball girl runs across the court during the women's singles match between Simona Halep of Romania and Mirjana Lucic-Baroni of Croatia.Clive Mason/Getty Images
Spectators make their way around during day four of the 2015 French Open at Roland Garros on May 27, 2015 in Paris.Julian Finney/Getty Images
View of the Roland Garros logo made with clay during the 2015 French Open in Paris on May 27, 2015.MIGUEL MEDINA/AFP / Getty Images
Gael Monfils of France reacts during the men's singles match against Diego Schwartzman of Argentina.GONZALO FUENTES/Reuters
France's Jo-Wilfried Tsonga smashes the ball to Israel's Dudi Sela.Christophe Ena/The Associated Press
A general view shows the Philippe Chatrier central court during the men's singles match between Diego Schwartzman of Argentina and Gael Monfils of France at the French Open tennis tournament at the Roland Garros stadium in Paris, France, May 27, 2015.GONZALO FUENTES/Reuters
Radek Stepanek of the Czech Republic plays a shot to compatriot Tomas Berdych during their men's singles match at the French Open.PASCAL ROSSIGNOL/Reuters
Slovenia's Polona Hercog returns the ball to Russia's Elena Vesnina.MIGUEL MEDINA/AFP / Getty Images
Germany's Angelique Kerber returns the ball to Australia's Ajla Tomljanovic.MIGUEL MEDINA/AFP / Getty Images
Bob Bryan of the United States in action during a men's doubles match during day four of the 2015 French Open at Roland Garros on May 27, 2015 in Paris.Clive Brunskill/Getty Images
Italy's Camila Giorgi returns the ball to Spain's Garbine Muguruza.PATRICK KOVARIK/AFP / Getty Images
Misaki Doi of Japan argues with a referee during the women's singles match against Ana Ivanovic of Serbia.PASCAL ROSSIGNOL/Reuters