2016 Rio Olympics - Tennis - Preliminary - Women's Singles First Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 06/08/2016. Ana Ivanovic (SRB) of Serbia in action against Carla Suarez Navarro (ESP) of Spain. REUTERS/Toby Melville

2016 Rio Olympics - Tennis - Preliminary - Women's Singles First Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 06/08/2016. Ana Ivanovic (SRB) of Serbia in action against Carla Suarez Navarro (ESP) of Spain. REUTERS/Toby Melville

2016 Rio Olympics - Tennis - Preliminary - Women's Singles First Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 06/08/2016. Carla Suarez Navarro (ESP) of Spain in action against Ana Ivanovic (SRB) of Serbia. REUTERS/Toby Melville

2016 Rio Olympics - Shooting - Final - Men's 10m Air Pistol Finals - Olympic Shooting Centre - Rio de Janeiro, Brazil - 06/08/2016. Hoang Xuan Vinh (VIE) of Vietnam reacts after winning the finals. REUTERS/Edgard Garrido

2016 Rio Olympics - Shooting - Final - Men's 10m Air Pistol Finals - Olympic Shooting Centre - Rio de Janeiro, Brazil - 06/08/2016. Hoang Xuan Vinh (VIE) of Vietnam celebrates after winning the finals. REUTERS/Edgard Garrido

2016 Rio Olympics - Shooting - Victory Ceremony - Men's 10m Air Pistol Victory Ceremony - Olympic Shooting Centre - Rio de Janeiro, Brazil - 06/08/2016. Felipe Wu (BRA) of Brazil shows his silver medal. REUTERS/Edgard Garrido

2016 Rio Olympics - Shooting - Preliminary - Men's 10m Air Pistol Qualification - Olympic Shooting Centre - Rio de Janeiro, Brazil - 06/08/2016. Shooters compete. REUTERS/Edgard Garrido

2016 Rio Olympics - Artistic Gymnastics - Preliminary - Men's Qualification - Subdivisions - Rio Olympic Arena - Rio de Janeiro, Brazil - 06/08/2016. Samir Ait Said (FRA) of France is placed on a stretcher after breaking his leg during competition on the vault. REUTERS/Damir Sagolj