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Italy's Jannik Sinner plays a forehand return during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 10, 2025. (AP Photo/Vincent Thian)

Italy's Jannik Sinner plays a forehand return during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 10, 2025. (AP Photo/Vincent Thian)

FILE - Carlos Alcaraz, of Spain, reacts during a match against Li Tu, of Australia, during the first round of the U.S. Open tennis championships, Tuesday, Aug. 27, 2024, in New York. (AP Photo/Matt Rourke, File)

FILE - Carlos Alcaraz, of Spain, reacts during a match against Li Tu, of Australia, during the first round of the U.S. Open tennis championships, Tuesday, Aug. 27, 2024, in New York. (AP Photo/Matt Rourke, File)

FILE - Spain's Carlos Alcaraz jumps to try and return to Italy's Matteo Berrettini in a men's singles match on day eight of the Wimbledon tennis championships in London, Monday, July 10, 2023. (AP Photo/Alberto Pezzali, File)

FILE - Spain's Carlos Alcaraz jumps to try and return to Italy's Matteo Berrettini in a men's singles match on day eight of the Wimbledon tennis championships in London, Monday, July 10, 2023. (AP Photo/Alberto Pezzali, File)

Spain's Carlos Alcaraz receives treatment from a trainer during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 10, 2025. (AP Photo/Vincent Thian)

Spain's Carlos Alcaraz receives treatment from a trainer during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 10, 2025. (AP Photo/Vincent Thian)

Spain's Carlos Alcaraz plays a shot between his legs during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 9, 2025. (AP Photo/Mark Baker)

Spain's Carlos Alcaraz plays a shot between his legs during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 9, 2025. (AP Photo/Mark Baker)

FILE - Jannik Sinner, of Italy, serves to Taylor Fritz, of the United States, during the men's singles final of the U.S. Open tennis championships, Sunday, Sept. 8, in New York. 2024. (AP Photo/Frank Franklin II, File)

FILE - Jannik Sinner, of Italy, serves to Taylor Fritz, of the United States, during the men's singles final of the U.S. Open tennis championships, Sunday, Sept. 8, in New York. 2024. (AP Photo/Frank Franklin II, File)

Italy's Jannik Sinner dries himself with a towel during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 10, 2025. (AP Photo/Manish Swarup)

Italy's Jannik Sinner dries himself with a towel during a practice session ahead of the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 10, 2025. (AP Photo/Manish Swarup)

FILE - Carlos Alcaraz, right, of Spain talks with runner-up Jannik Sinner of Italy after winning their men's singles finals match of the China Open tennis tournament, at the National Tennis Center in Beijing, Wednesday, Oct. 2, 2024. (AP Photo/Andy Wong, File)

FILE - Carlos Alcaraz, right, of Spain talks with runner-up Jannik Sinner of Italy after winning their men's singles finals match of the China Open tennis tournament, at the National Tennis Center in Beijing, Wednesday, Oct. 2, 2024. (AP Photo/Andy Wong, File)

FILE - Jannik Sinner, of Italy, holds up the championship trophy after defeating Taylor Fritz, of the United States, in the men's singles final of the U.S. Open tennis championships, Sunday, Sept. 8, 2024, in New York. (AP Photo/Julia Nikhinson, File)

FILE - Jannik Sinner, of Italy, holds up the championship trophy after defeating Taylor Fritz, of the United States, in the men's singles final of the U.S. Open tennis championships, Sunday, Sept. 8, 2024, in New York. (AP Photo/Julia Nikhinson, File)