Everton's Ross Barkley looks dejected. Football Soccer Britain - Everton v Stoke City - Premier League - Goodison Park - 27/8/16. Action Images via Reuters / Ed Sykes Livepic

Britain Tennis - Wimbledon - All England Lawn Tennis & Croquet Club, Wimbledon, England - 9/7/16 Canada's Milos Raonic's coach John McEnroe during a practice session REUTERS/Toby Melville

Sydney's Lord Mayor Clover Moore (C) poses for a picture with Australia's Olympic athletes returning from Rio during an official welcome ceremony at the Sydney Opera House in Australia, August 29, 2016. REUTERS/Jason Reed

Australia's modern pentathlete gold medallist Chloe Esposito prepares to sign autographs for fans during an official welcome home for Australia's Olympic athletes back returning from Rio at the Sydney Opera House in Australia, August 29, 2016. REUTERS/Jason Reed

Sydney's Lord Mayor Clover Moore (C) waves with Australia's Olympic athletes returning from Rio during an official welcome ceremony at the Sydney Opera House in Australia, August 29, 2016. REUTERS/Jason Reed

Beyonce accepts the Female Video of the Year award from U.S. Olympic gymnasts Madison Kocian, Aly Raisman, Simone Biles and Laurie Hernandez during the 2016 MTV Video Music Awards in New York, U.S., August 28, 2016. REUTERS/Lucas Jackson

Olympic swimmer Michael Phelps and fiance Nicole Johnson arrive at the 2016 MTV Video Music Awards in New York, U.S., August 28, 2016. REUTERS/Eduardo Munoz

2016 Rio Olympics - Tennis - Final - Women's Singles Gold Medal Match - Olympic Tennis Centre - Rio de Janeiro, Brazil - 13/08/2016. Monica Puig (PUR) of Puerto Rico celebrates after winning match against Angelique Kerber (GER) of Germany. REUTERS/Toby Melville