China's Ma Long ties his shoes during the table tennis men's singles quarterfinal match against Egypt's Omar Assarat at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Ma Long and Egypt's Omar Assarat clap paddles after the table tennis men's singles quarterfinal match at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Ma Long competes during the table tennis men's singles quarterfinal match against Egypt's Omar Assarat at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Ma Long competes during the table tennis men's singles quarterfinal match against Egypt's Omar Assarat at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo. (AP Photo/Kin Cheung)

Egypt's Omar Assar competes during the table tennis men's singles quarterfinal match against China's Ma Long at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Ma Long reacts during the table tennis men's singles quarterfinal match against Egypt's Omar Assarat at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo. (AP Photo/Kin Cheung)