2016 Rio Olympics - Swimming - Victory Ceremony - Women's 100m Breaststroke Victory Ceremony - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. Gold medallist Lilly King (USA) of USA and silver medallist Yulia Efimova (RUS) of Russia celebrate with their national flags. REUTERS/Dominic Ebenbichler

2016 Rio Olympics - Swimming - Men's 200m Butterfly Semifinals - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. Michael Phelps (USA) of USA competes REUTERS/David Gray

2016 Rio Olympics - Swimming - Final - Women's 100m Breaststroke Final - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. Lilly King (USA) and Katie Meili (USA) of USA celebrate REUTERS/Stefan Wermuth

2016 Rio Olympics - Swimming - Victory Ceremony - Women's 100m Breaststroke Victory Ceremony - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. Lilly King (USA) of USA poses with her medal REUTERS/David Gray

2016 Rio Olympics - Swimming - Victory Ceremony - Women's 100m Breaststroke Victory Ceremony - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. Lilly King (USA) of USA poses with her gold medal. REUTERS/Marcos Brindicci

2016 Rio Olympics - Swimming - Victory Ceremony - Women's 100m Breaststroke Victory Ceremony - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. Silver medallist Yulia Efimova (RUS) of Russia is draped in her national flag. REUTERS/Dominic Ebenbichler

2016 Rio Olympics - Swimming - Victory Ceremony - Women's 100m Breaststroke Victory Ceremony - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. Gold medallist Lilly King (USA) of USA, silver medallist Yulia Efimova (RUS) of Russia and bronze medallist Katie Meili (USA) of USA pose with their medals. REUTERS/Dominic Ebenbichler

2016 Rio Olympics - Swimming - Victory Ceremony - Men's 100m Backstroke Victory Ceremony - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 08/08/2016. David Plummer (USA) of USA and teammate Ryan Murphy (USA) pose with their medals. REUTERS/Stefan Wermuth