Ball children run as Naomi Osaka of Japan plays against Simona Halep of Romania during their women’s single third round match at the French Open tennis tournament at Roland Garros in Paris, France, 27 May 2016. EPA/ROBERT GHEMENT

Spectators watching as Nick Kyrgios of Australia plays Richard Gasquet of France during their men’s single third round match at the French Open tennis tournament at Roland Garros in Paris, France, 27 May 2016. EPA/IAN LANGSDON

A ball child watching Kei Nishikori of Japan in action against Fernando Verdasco of Spain during their men’s single third round match at the French Open tennis tournament at Roland Garros in Paris, France, 27 May 2016. EPA/ROBERT GHEMENT

Ball boys watch Carlos Berlocq of Argentina play against Paolo Lorenzi of Italy during their men’s single first round match at the French Open tennis tournament at Roland Garros in Paris, France, 24 May 2016. EPA/YOAN VALAT

People watch tennis on a big screen during the French Open tennis tournament at Roland Garros in Paris, France, 25 May 2016. EPA/ROBERT GHEMENT

Ball girl and boy run as Jeremy Chardy of France plays against Leonardo Mayer of Argentina during their men’s single first round match at the French Open tennis tournament at Roland Garros in Paris, France, 23 May 2016. EPA/Christophe Petit Tesson