Singapore's Yu Mengyu receives medical treatment during her table tennis women's singles semifinal match against China's Chen Meng at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu receives medical treatment during her table tennis women's singles semifinal match against China's Chen Meng at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng competes against Singapore's Yu Mengyu during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu serves against China's Chen Meng during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito serves against China's Sun Yingsha during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha competes against Japan's Mima Ito during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng competes against Singapore's Yu Mengyu during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng competes against Singapore's Yu Mengyu during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha reacts during her table tennis women's singles semifinal match against Japan's Mima Ito at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito serves against China's Sun Yingsha during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng celebrates her victory over Singapore's Yu Mengyu at the end of the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha competes against Japan's Mima Ito during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha competes against Japan's Mima Ito during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Chen Meng competes against Singapore's Yu Mengyu during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito competes against China's Sun Yingsha during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha serves against Japan's Mima Ito during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito competes against China's Sun Yingsha during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha celebrates after winning a point during her table tennis women's singles semifinal match against Japan's Mima Ito at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito serves against China's Sun Yingsha during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito competes against China's Sun Yingsha during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha competes against Japan's Mima Ito during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito pauses during her table tennis women's singles semifinal match against China's Sun Yingsha at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha competes against Japan's Mima Ito during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

China's Sun Yingsha reacts during her table tennis women's singles semifinal match against Japan's Mima Ito at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito serves against China's Sun Yingsha during the table tennis women's singles semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito competes against Singapore's Yu Mengyu during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu gestures during the bronze medal match of the table tennis women's singles against Japan's Mima Ito at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito serves against Singapore's Yu Mengyu during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu serves against Japan's Mima Ito during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito serves against Singapore's Yu Mengyu during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/David Goldman)

Japan's Mima Ito serves against Singapore's Yu Mengyu during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/David Goldman)

Japan's Mima Ito competes against Singapore's Yu Mengyu during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Japan's Mima Ito serves against Singapore's Yu Mengyu during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu competes against Japan's Mima Ito during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Yu Mengyu competes against Japan's Mima Ito during the bronze medal match of the table tennis women's singles at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo. (AP Photo/Kin Cheung)