Hong Kong's Doo Hoi-kem competes during the table tennis women's singles round of 16 match against Neverland's Britt Eerland at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu celebrates after winning the table tennis women's singles round of 16 match against Liu Juan of the United States at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Hong Kong's Doo Hoi-kem competes during the table tennis women's singles round of 16 match against Neverland's Britt Eerland at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu competes during the table tennis women's singles round of 16 match against Liu Juan of the United States at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Hong Kong's Doo Hoi-kem competes during the table tennis women's singles round of 16 match against Neverland's Britt Eerland at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu reacts during the table tennis women's singles round of 16 match against Liu Juan of the United States at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Thailand's Suthasini Sawettabut competes during the table tennis women's singles round of 16 match against Japan's Mima Ito at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito competes during the table tennis women's singles round of 16 match against Thailand's Suthasini Sawettabut at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Austria's Liu Jia receives medical treatment during the table tennis women's singles round of 16 match against South Korea's Jeon Ji-hee at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)

Austria's Liu Jia receives medical treatment during the table tennis women's singles round of 16 match against South Korea's Jeon Ji-hee at the 2020 Summer Olympics, Tuesday, July 27, 2021, in Tokyo. (AP Photo/Kin Cheung)