2016 Rio Olympics - Fencing - Victory Ceremony - Women's Sabre Team Victory Ceremony - Carioca Arena 3 - Rio de Janeiro, Brazil - 13/08/2016. Russia celebrates winning the gold medal with USA and Ukraine. REUTERS/Issei Kato

2016 Rio Olympics - Fencing - Victory Ceremony - Women's Sabre Team Victory Ceremony - Carioca Arena 3 - Rio de Janeiro, Brazil - 13/08/2016. Russia celebrates winning the gold medal. REUTERS/Toru Hana

2016 Rio Olympics - Fencing - Final - Women's Sabre Team Gold Medal Match - Carioca Arena 3 - Rio de Janeiro, Brazil - 13/08/2016. Russia celebrates winning the match. REUTERS/Toru Hanai

2016 Rio Olympics - Swimming - Final - Men's 4 x 100m Medley Relay Final - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 13/08/2016. Michael Phelps (USA) of USA reacts after they won. REUTERS/Marcos Brindicci

2016 Rio Olympics - Swimming - Final - Men's 4 x 100m Medley Relay Final - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 13/08/2016. Nicole Johnson, the fiance of Michael Phelps (USA) of USA, carrying their son Boomer, watches from the stands with Phelp's mother Deborah. REUTERS/Michael Dalder

2016 Rio Olympics - Swimming - Final - Men's 4 x 100m Medley Relay Final - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 13/08/2016. Fans hold placards in support of Michael Phelps (USA) of USA. REUTERS/Stefan Wermuth

2016 Rio Olympics - Swimming - Victory Ceremony - Women's 4 x 100m Medley Relay Victory Ceremony - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 13/08/2016. Gold medallists Kathleen Baker (USA) of USA, Lilly King (USA) of USA, Dana Vollmer (USA) of USA and Simone Manuel (USA) of USA pose with their medals and national flag. REUTERS/Stefan Wermuth

2016 Rio Olympics - Swimming - Final - Women's 4 x 100m Medley Relay Final - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 13/08/2016. Simone Manuel (USA) of USA touches the wall to win the gold medal for Team USA. REUTERS/Athit Perawongmetha