Mongolia's Enkhbat Lkhagvasuren competes during men's table tennis singles preliminary round match against Nikhil Kumar, of United States at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Nikhil Kumar, of United State competes during men's table tennis singles preliminary round match against Mongolia's Enkhbat Lkhagvasuren at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

A cameraman wear protective mask during men's table tennis singles preliminary round match at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Nikhil Kumar, of United State reactss during men's table tennis singles preliminary round match against Mongolia's Enkhbat Lkhagvasuren at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Clarence Chew Zhe Yu serves the ball during the table tennis men's singles first round match against Senegal's Ibrahima Diaw at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Clarence Chew Zhe Yu celebrate after winning table tennis men's singles first round match against Senegal's Ibrahima Diaw at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Senegal's Ibrahima Diaw competes during the table tennis men's singles first round match against Singapore's Clarence Chew Zhe Yu at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Russia's Yana Noskova competes during the table tennis women's singles first round match against France's Prithika Pavade at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

France's Prithika Pavade competes during the table tennis women's singles first round match against Russia's Yana Noskova at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Clarence Chew Zhe Yu looks on during the table tennis men's singles first round match against Senegal's Ibrahima Diaw at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Switzerland's Rachel Moret reacts during the table tennis women's singles first round match against Brazil's Jessica Yamada at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Switzerland's Rachel Moret competes during the table tennis women's singles first round match against Brazil's Jessica Yamada at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Switzerland's Rachel Moret competes during the table tennis women's singles first round match against Brazil's Jessica Yamada at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Clarence Chew Zhe Yu reacts during the table tennis men's singles first round match against Senegal's Ibrahima Diaw at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Singapore's Clarence Chew Zhe Yu reacts during the table tennis men's singles first round match against Senegal's Ibrahima Diaw at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Croatia's Andrej Gacina competes during the table tennis men's singles first round match against Togo's Kokou Dodji Fanny at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Sweden's Christina Kaellberg competes during the table tennis women's singles first round match against Portugal's Shao Jieni at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Czech Republic's Lubomir Jancarik competes during the table tennis men's singles first round match against Saudi Arabia's Ali Alkhadrawi at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Britain's Ho Tin Tin competes during the table tennis women's singles first round match against India's Manika Batra at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Portugal's Shao Jieni reacts during the table tennis women's singles first round match against Sweden's Christina Kaellberg at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

India's Manika Batra competes during the table tennis women's singles first round match against Britain's Ho Tin Tin at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

France's Yuan Jia Nan competes during the table tennis women's singles first round match against Egypt's Yousra Helmy at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Greece's Panagiotis Gionis reacts during the table tennis men's singles first round match against Serbia's Zsolt Peto at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Greece's Panagiotis Gionis competes during the table tennis men's singles first round match against Serbia's Zsolt Peto at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Romania's Ovidiu Ionescu competes during the table tennis men's singles first round match against Australia's Yan Xin at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Britain's Paul Drinkhall competes during the table tennis men's singles first round match against Iran's Nima Alamian at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

France's Yuan Jia Nan competes during the table tennis women's singles first round match against Egypt's Yousra Helmy at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Britain's Paul Drinkhall reacts during the table tennis men's singles first round match against Iran's Nima Alamian at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

India's Sutirtha Mukherjee talks to her coach during the table tennis women's singles first round match against Sweden's Linda Bergstroem at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Hong Kong's Lam Siu-hang talks to his coach during the table tennis men's singles first round match against Puerto Rico's Brian Afanador at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Hong Kong's Lam Siu-hang competes during the table tennis men's singles first round match against Puerto Rico's Brian Afanador at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Hong Kong's Lam Siu-hang competes during the table tennis men's singles first round match against Puerto Rico's Brian Afanador at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Czech Republic's Lubomir Jancarik competes during the table tennis men's singles first round match against Saudi Arabia's Ali Alkhadrawi at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

India's Sutirtha Mukherjee competes during the table tennis women's singles first round match against Sweden's Linda Bergstroem at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

India's Sutirtha Mukherjee reacts during the table tennis women's singles first round match against Sweden's Linda Bergstroem at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Hong Kong's Lam Siu-hang serves during the table tennis men's singles first round match against Puerto Rico's Brian Afanador at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Portugal's Shao Jieni reacts during the table tennis women's singles first round match against Sweden's Christina Kaellberg at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Poland's Natalia Partyka competes during the table tennis women's singles first round match against Australia's Michelle Bromley at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Hong Kong's Lam Siu-hang celebrates after winning the table tennis men's singles first round match against Puerto Rico's Brian Afanador at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Sweden's Linda Bergstroem competes during the table tennis women's singles first round match against India's Sutirtha Mukherjee at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Spain's Galia Dvorak competes during the table tennis women's singles first round match against Liu Juan, of United States at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Liu Juan, of United State competes during the table tennis women's singles first round match against Spain's Galia Dvorak at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Chile's Maria Paulina Vega reacts during the table tennis women's singles first round match against Mongolia's Bolorerdene Batmunkh at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Chile's Maria Paulina Vega competes during the table tennis women's singles first round match against Mongolia's Bolorerdene Batmunkh at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Romania's Ovidiu Ionescu reacts during the table tennis men's singles first round match against Australia's Yan Xin at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Liu Juan, of United State calls time-out during the table tennis women's singles first round match against Spain's Galia Dvorak at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Argentina's Horacio Cifuentes competes during the table tennis men's singles first round match against Vanuatu's Yoshua Shing at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Argentina's Gaston Alto competes during the table tennis men's singles first round match against Spain's Alvaro Robles at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

South Korea's Shin Yu-bin competes during the table tennis women's singles first round match against Guyana's Chelsea Edghill at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Spain's Alvaro Robles competes during the table tennis men's singles first round match against Argentina's Gaston Alto at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Spain's Alvaro Robles competes during the table tennis men's singles first round match against Argentina's Gaston Alto at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Spain's Alvaro Robles serves during the table tennis men's singles first round match against Argentina's Gaston Alto at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Spain's Alvaro Robles looks on during the table tennis men's singles first round match against Argentina's Gaston Alto at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

South Korea's Shin Yu-bin gestures during the table tennis women's singles first round match against Guyana's Chelsea Edghill at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Nigeria's Edem Offiong reacts during the table tennis women's singles first round match against Hungary's Dora Madarasz at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Italy's Debora Vivarelli competes during the table tennis women's singles first round match against Australia's Lay Jian Fang at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Italy's Debora Vivarelli competes during the table tennis women's singles first round match against Australia's Lay Jian Fang at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Ukrain's Kou Lei serves the ball during the table tennis men's singles first round match against Tunisia's Adam Hmam at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

South Korea's Shin Yu-bin competes during the table tennis women's singles first round match against Guyana's Chelsea Edghill at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Nigeria's Edem Offiong competes during the table tennis women's singles first round match against Hungary's Dora Madarasz at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)

Nigeria's Edem Offiong competes during the table tennis women's singles first round match against Hungary's Dora Madarasz at the 2020 Summer Olympics, Saturday, July 24, 2021, in Tokyo. (AP Photo/Kin Cheung)