Tennis - French Open Women's Singles Final match - Roland Garros - Serena Williams of the U.S. vs Garbine Muguruza of Spain- Paris, France - 04/06/16 Muguruza reacts. REUTERS/Gonzalo Fuentes

Belgium Formula One - F1 - Belgian Grand Prix 2016 - Francorchamps, Belgium - 28/8/16 - Force India's Nico Hulkenberg of Germany leads the race ahead of Mercedes' Lewis Hamilton of Britain during the Belgian F1 Grand Prix. REUTERS/Yves Herman

Belgium Formula One - F1 - Belgian Grand Prix 2016 - Francorchamps, Belgium - 28/08/16 - Mercedes' Nico Rosberg of Germany leads the race at the start of the Belgian F1 Grand Prix. REUTERS/Yves Herman

Belgium Formula One - F1 - Belgian Grand Prix 2016 - Francorchamps, Belgium - 28/7/16 - Mercedes' Nico Rosberg of Germany leads the race ahead of Red Bull's Daniel Ricciardo of Australia during the Belgian F1 Grand Prix. REUTERS/Yves Herman

2016 Rio Olympics - Tennis - Preliminary - Women's Singles Second Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 08/08/2016. Caroline Garcia (FRA) of France in action against Johanna Konta (GBR) of United Kingdom. REUTERS/Toby Melville

2016 Rio Olympics - Tennis - Preliminary - Women's Singles Second Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 08/08/2016. Kristina Mladenovic (FRA) of France in action against Madison Keys (USA) of USA. REUTERS/Kevin Lamarque

2016 Rio Olympics - Tennis - Preliminary - Men's Singles Second Round - Olympic Tennis Centre - Rio de Janeiro, Brazil - 09/08/2016. Benoit Paire (FRA) of France in action against Fabio Fognini (ITA) of Italy. REUTERS/Kevin Lamarque

Germany Formula One - F1 - German Grand Prix 2016 - Hockenheimring, Germany - 31/7/16 - Mercedes' Lewis Hamilton celebrates after winning the race. REUTERS/Ralph Orlowski