French Open

Serbia's Novak Djokovic falls as he defeats Britain's Andy Murray during their final match of the French Open tennis tournament at the Roland Garros stadium.

Alastair Grant/AP

Serbia’s Novak Djokovic falls as he defeats Britain’s Andy Murray during their final match of the French Open tennis tournament at the Roland Garros stadium

Stadium workers remove rain water from a protective cover on center court at the French Open tennis tournament  at the Roland Garros stadium in Paris, France, Tuesday, May 31, 2016. Persistent rain delayed the start of play. (AP Photo/Michel Euler)

Michel Euler/Reuters

Stadium workers remove rain water from a protective cover on center court at the French Open tennis tournament at the Roland Garros stadium in Paris, France. Persistent rain delayed the start of play.

Serbia's Novak Djokovic returns in his first round match of the French Open tennis tournament against Yen-Hsun Lu of Taiwan at the Roland Garros stadium in Paris, France, Tuesday, May 24, 2016.

Michel Euler/ AP Photo

Serbia’s Novak Djokovic returns in his first round match of the French Open tennis tournament against Yen-Hsun Lu of Taiwan at the Roland Garros stadium in Paris, France.

Tennis - French Open - Roland Garros - Paris, France - 23/05/16  An illustration photo shows a tennis ball which drops into water during rainfall. REUTERS/Benoit Tessier

Benoit Tessier/Reuters

A tennis ball bounces in the rain during The French Open, Roland Garros, Paris 

France Tennis French Open

David Vincent/AP

Lucie Safarova of the Czech Republic serves the ball to Russia’s Maria Sharapova during their fourth round match of the French Open tennis tournament at the Roland Garros stadium, on Monday

Rafael Nadal of Spain plays a shot to Quentin Halys of France during their men's singles match at the French Open tennis tournament at the Roland Garros stadium in Paris

Pascal Rossignol/Reuters

Rafael Nadal of Spain plays a shot to Quentin Halys of France during their men’s singles match at the French Open tennis tournament at the Roland Garros stadium in Paris, France, on Tuesday

Workers sweep water off a tarp as rain interrupts a men's singles match between Djokovic of Serbia and Sousa of Portugal at the French Open tennis tournament at the Roland Garros stadium in Paris...Workers sweep water off a tarp as rain interrupts a men's singles match between Novak Djokovic of Serbia and Joao Sousa of Portugal at the French Open tennis tournament at the Roland Garros stadium in Paris May 26, 2014.     REUTERS/Gonzalo Fuentes

Gonzalo Fuentes/Reuters

Workers sweep water off tarpaulin as rain interrupts the men’s singles match between Novak Djokovic of Serbia and Joao Sousa of Portugal at the French Open tennis tournament, Roland Garros stadium, Paris

Roger Federer of Switzerland serves to Somdev Devvarman of India during their men's singles match at the French Open tennis tournament at the Roland Garros stadium in Paris May 29, 2013.

Philippe Wojazer/Reuters

Roger Federer of Switzerland, the world-ranked number 3 player, serves to Somdev Devvarman of India, ranked 188, during their men’s singles match at the French Open tennis tournament at the Roland Garros stadium in Paris on Wednesday

Spectators wear ponchos during a rainfall as they wait for a match at the French Open tennis tournament in Paris...Spectators wear ponchos during a rainfall as they wait for the start of the women's singles match between Coco Vandeweghe of the U.S. and Yaroslava Shvedova of Kazakhstan at the French Open tennis tournament at the Roland Garros stadium in Paris May 28, 2013.  REUTERS/Vincent Kessler (FRANCE  - Tags: SPORT TENNIS)

Vincent Kessler/Reuters

Spectators wear ponchos during the rain as they wait for the start of the women’s singles match between Coco Vandeweghe of the U.S. and Yaroslava Shvedova of Kazakhstan at the French Open tennis tournament at the Roland Garros stadium in Paris on Tuesday.