Serbia's Novak Djokovic returns the ball against Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Serbia's Novak Djokovic celebrates his victory over Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Carlos Alcaraz of Spain reacts as he plays Roman Safiullin of Russia during their men's singles third round match, at the 2024 Summer Olympics, Wednesday, July 31, 2024, at the Roland Garros stadium in Paris, France. (AP Photo/Andy Wong)
Serbia's Novak Djokovic prepares to serve during his match against Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Tommy Paul of the United States returns a shot to Corentin Moutet of France during their men's singles third round match, at the 2024 Summer Olympics, Wednesday, July 31, 2024, at the Roland Garros stadium in Paris, France. (AP Photo/Andy Wong)
Germany's Dominik Koepfer returns the ball against Serbia's Novak Djokovic during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Germany's Dominik Koepfer returns the ball against Serbia's Novak Djokovic during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Felix Auger-Aliassime of Canada returns the ball against Daniil Medvedev of Russia during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Serbia's Novak Djokovic returns the ball against Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Daniil Medvedev of Russia returns a ball against Felix Auger-Aliassime of Canada during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Serbia's Novak Djokovic cools off during a break against Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Serbia's Novak Djokovic returns the ball against Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Daniil Medvedev of Russia reacts against Felix Auger-Aliassime of Canada during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Stefanos Tsitsipas of Greece hits a forehand shot to Zizou Bergs of Belgium during the men's singles tennis competition, at the 2024 Summer Olympics, Sunday, July 28, 2024, in Paris, France. (AP Photo/Andy Wong)
Serbia's Novak Djokovic celebrates his victory over Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)
Jelena Djokovic, wife of Novak Djokovic, left, watches the match between Serbia's Novak Djokovic and Germany's Dominik Koepfer during the men's single tennis competition at the Roland Garros stadium, at the 2024 Summer Olympics, Wednesday, July 31, 2024, in Paris, France. (AP Photo/Manu Fernandez)