Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Daiya Seto (JPN), JULY 24, 2021 - Swimming : Men's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

24 July 2021, Japan, Tokio: Swimming: Olympics, heats: 100m breaststroke, men at Tokyo Aquatics Centre. Adam Peaty from Great Britain after the swim. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, heats: 100m breaststroke, men at Tokyo Aquatics Centre. Adam Peaty from Great Britain in action. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, heats: 100m breaststroke, men at Tokyo Aquatics Centre. Adam Peaty from Great Britain in action. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, heats: 100m breaststroke, men at Tokyo Aquatics Centre. Fabian Schwingenschl?gl from Germany reacts after the swim. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, heats: 100 m breaststroke, men at Tokyo Aquatics Centre. Lucas Joachim Matzerath after the swim. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, heats: 100 m breaststroke, men at Tokyo Aquatics Centre. Lucas Matzerath from Germany in action. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, preliminaries, 400m medley, men at Tokyo Aquatics Centre. Ron Polonsky from Israel in action. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, preliminaries, 400m medley, men at Tokyo Aquatics Centre. Se-Bom Lee from Australia in action. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, preliminaries, 400m medley, men at Tokyo Aquatics Centre. Ron Polonsky from Israel in action. Photo: Michael Kappeler/dpa

General view, JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Akari Inaba (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Miura (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Minori Yamamoto (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Yumi Arima (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

General view, JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Kako Kawaguchi (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Miura (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Detailed shot, JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Eruna Ura (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Yuki Niizawa (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Makihiro Motomiya head coach (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Makihiro Motomiya head coach (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Maiko Hashida (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Miura (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Akari Inaba (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Kako Kawaguchi (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Japan Women's team group (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

24 July 2021, Japan, Tokio: Swimming: Olympics, preliminaries, 400m medley, men at Tokyo Aquatics Centre. Chase Kalisz from the USA in action. Photo: Michael Kappeler/dpa

24 July 2021, Japan, Tokio: Swimming: Olympics, heats: 100m butterfly, women at Tokyo Aquatics Centre. Yusra Mardini of IOC Refugee Olympic Team in action. Photo: Michael Kappeler/dpa

Rikako Ikee (JPN), July 24, 2021 - Swimming : Women's 4 x 100m Freestyle Relay Heats at Tokyo Aquatics Centre during the Tokyo 2020 Olympic Games in Tokyo, Japan. (Photo by Itaru Chiba/AFLO)

Yui Ohashi (JPN), JULY 24, 2021 - Swimming : Women's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

24 July 2021, Japan, Tokio: Swimming: Olympics, preliminaries, 400m medley, men at Tokyo Aquatics Centre.Joan Lluis Pons Ramon of Spain in action. Photo: Michael Kappeler/dpa

Japan Women's team group (JPN), JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Yui Ohashi (JPN), JULY 24, 2021 - Swimming : Women's 400m Individual Medley Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

24 July 2021, Japan, Tokio: Swimming: Olympics, preliminaries, 400m medley, men at Tokyo Aquatics Centre. Chase Kalisz from the USA looks at the scoreboard. Photo: Michael Kappeler/dpa

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

TOKYO, JAPAN - JULY 24: Swimmers compete in the heats during the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 24, 2021 in Tokyo, Japan. Ali Atmaca / Anadolu Agency/ABACAPRESS.COM

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

ISTANBUL, TURKEY - JULY 23: An aerial view of a beach after it was forbidden to swim all day long to ensure the safety of the citizens due to the intense waves and currents on the beaches in Sile, Istanbul, Turkey on July 23, 2021. Muhammed Enes Yildirim / Anadolu Agency/ABACAPRESS.COM

Norimasa Hirai coach (JPN), JULY 22, 2021 - Swimming : Official training before the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

(L to R) Daiya Seto (JPN), Suei Mabuchi (JPN), JULY 22, 2021 - Swimming : Official training before the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

210722 -- TOKYO, July 22, 2021 -- Members of China s swimming team take part in a training session ahead of the Tokyo 2020 Olympic Games, Olympische Spiele, Olympia, OS at the Tokyo Aquatics Centre, in Tokyo, Japan, on July 22, 2021. TOKYO2020JAPAN-TOKYO-SWIMMING-CHINA-TRAINING WangxJingqiang PUBLICATIONxNOTxINxCHN

Daiya Seto (JPN), JULY 22, 2021 - Swimming : Official training before the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Sport Bilder des Tages 210721 -- TOKYO, July 21, 2021 -- China s Zhang Yufei reacts during a swimming training session at Tokyo Aquatics Centre in Tokyo, Japan, July 21, 2021. TOKYO2020JAPAN-TOKYO-OLY-SWIMMING-CHINA-TRAINING XuxChang PUBLICATIONxNOTxINxCHN

Rikako Ikee (JPN), JULY 24, 2021 - Swimming : Women's 4x100m Freestyle Relay Heat during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

General view, JULY 24, 2021 - Water Polo : Women's Preliminary Round Group B match between Japan 25-4 United States during the Tokyo 2020 Olympic Games at the Tokyo Tatsumi International Swimming Center in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

General view, JULY 22, 2021 - Swimming : Official training before the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO)

Adam Peaty (GBR), JULY 26, 2021 - Swimming : Men's 100m Breatstroke Final during the Tokyo 2020 Olympic Games at the Tokyo Aquatics Centre in Tokyo, Japan. (Photo by Akihiro Sugimoto/AFLO SPORT)