Felix Auger-Aliassime returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Jannik Sinner returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Felix Auger-Aliassime celebrates scoring during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Felix Auger-Aliassime returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Jannik Sinner returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Jannik Sinner celebrates scoring during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Felix Auger-Aliassime returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Wu Xiaoling)

Felix Auger-Aliassime returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Jannik Sinner returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Jannik Sinner serves during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Wu Xiaoling)

Felix Auger-Aliassime falls down during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Felix Auger-Aliassime serves during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Jannik Sinner (front) returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Wu Xiaoling)

Jannik Sinner reacts during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Wu Xiaoling)

Jannik Sinner returns a hit during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Felix Auger-Aliassime serves during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Jannik Sinner (L) and Felix Auger-Aliassime hug after the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Li Rui)

Felix Auger-Aliassime prepares to serve during the men's singles semifinal match between Jannik Sinner of Italy and Felix Auger-Aliassime of Canada at the 2025 US Open tennis championships in New York, the United States, Sept. 5, 2025. (Xinhua/Wu Xiaoling)