Nanjing 2014 - Gold medalist Evgeny Rylov of Russia and Simone Sabbioni of Italy, bronze medalist Li Guangyuan of China pose for a photo on the podium during the awarding ceremony of men's 100m backstroke final at Nanjing 2014 Youth Olympic Games in Nanjing, Jiangsu Province, Aug. 18, 2014.

Nanjing 2014 - Fullalove(L)of Great Britain, Clara Smiddy(C)of United States of American and Bobbi Gichard(R)of New Zealand pose on the podium during the Women's 100m Backstroke match at Nanjing 2014 Youth Olympic Games in Nanjing, Jiangsu Province, on Aug. 18, 2014.

ATHENS - AUGUST 15: Aaron Peirsol of USA and Lenny Krayselburg of USA compete in the men's swimming 100 metre backstroke heat on August 15, 2004 during the Athens 2004 Summer Olympic Games at the Main Pool of the Olympic Sports Complex Aquatic Centre in Athens, Greece. (Photo by Al Bello/Getty Images) *** Local Caption *** Aaron Peirsol;Lenny Krayselburg

(L-R) Mitch Larkin of Australia and Ryan Murphy of the United States compete in the Men's 100m Backstroke Final on Day 3 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on August 8, 2016 in Rio de Janeiro, Brazil.

Kathleen Baker of the United States in the Women's 100m Backstroke Final on Day 3 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on August 8, 2016 in Rio de Janeiro, Brazil.

Ryan Murphy of the United States celebrates winning gold in the Men's 100m Backstroke Final on Day 3 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on August 8, 2016 in Rio de Janeiro, Brazil.

General view of the start of the Men's 100m Backstroke Final on Day 3 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on August 8, 2016 in Rio de Janeiro, Brazil.

Kathleen Baker of the United States in the Women's 100m Backstroke Final on Day 3 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on August 8, 2016 in Rio de Janeiro, Brazil.

Katinka Hosszu of Hungary competes in the Women's 100m Backstroke Final on Day 3 of the Rio 2016 Olympic Games at the Olympic Aquatics Stadium on August 8, 2016 in Rio de Janeiro, Brazil.

Kliment Kolesnikov of Russian Federation in action during the Swimming Men's 400m Freestyle on Day 1 of the Buenos Aires 2018 Youth Olympic Games at Natatorium on October 7, 2018 in Buenos Aires, Argentina.