Jelena Jankovic of Serbia celebrates after winning her match against Petra Kvitova of the Czech Republic at the Wimbledon Tennis Championships in London, July 4, 2015. REUTERS/Henry Browne 

Formula One - F1 - British Grand Prix 2015 - Silverstone, England - 5/7/15
Mercedes' Lewis Hamilton celebrates his win on the podium with the champagne and Mercedes' Nico Rosberg
Reuters / Phil Noble

Chile's Alexis Sanchez celebrates after scoring the winning penalty kick in their Copa America 2015 final soccer match against Argentina at the National Stadium in Santiago, Chile, July 4, 2015. REUTERS/Marcos Brindicci 

Saskatchewan Roughriders running back Jerome Messam (C) is tackled by Toronto Argonauts defensive back Vincent Agnew (R) and Toronto Argonauts defensive lineman Tristan Okpalaugo (L) during the second half of their CFL football game in Regina, Saskatchewan July 5, 2015. The Toronto Argonauts defeated the Saskatchewan Roughriders 42-40. REUTERS/Matt Smith 

Formula One - F1 - British Grand Prix 2015 - Silverstone, England - 5/7/15
Skier Lindsey Vonn kisses Mercedes' Lewis Hamilton before the race
Reuters / Phil Noble

People swim during the annual public Lake Zurich crossing swimming event in Zurich July 1, 2015. The participants crossed Lake Zurich over a distance of 1,500 metres (4,921 ft). REUTERS/Arnd Wiegmann

Argentina's Lionel Messi falls in the net during the Copa America 2015 final soccer match against Chile at the National Stadium in Santiago, Chile, July 4, 2015. REUTERS/Ivan Alvarado 

A man wearing a Tour de France best climber's jersey practises flyboarding before the start of the 166-km (103.15 miles) second stage of the 102nd Tour de France cycling race from Utrecht to Zeeland July 5, 2015. REUTERS/Stefano Rellandini 

Formula One - F1 - British Grand Prix 2015 - Silverstone, England - 5/7/15
Mercedes' Lewis Hamilton celebrates as he crosses the finish line to win the race
Reuters / Andrew Yates

Lotto-Soudal rider Andre Greipel of Germany (R) celebrates as he wins ahead of Tinkoff-Saxo rider Peter Sagan of Slovakia (L) at the 166-km (103.15 miles) second stage of the 102nd Tour de France cycling race from Utrecht to Zeeland, July 5, 2015. REUTERS/Benoit Tessier

A spectator takes a selfie with Lucie Safarova of the Czech Republic after she won her match against Sloane Stephens of the U.S.A. at the Wimbledon Tennis Championships in London, July 3, 2015. REUTERS/Stefan Wermuth

Chile's Eduardo Vargas gets a kick in the face from Argentina's Nicolas Otamendi during their Copa America 2015 final soccer match at the National Stadium in Santiago, Chile, July 4, 2015. REUTERS/Jorge Adorno 

Paraguay's Oscar Romero (R) is tackled by Peru's Christian Ramos during their Copa America 2015 third-place soccer match at Estadio Municipal Alcaldesa Ester Roa Rebolledo in Concepcion, Chile, July 3, 2015. REUTERS/Andres Stapff 

Dustin Brown of Germany celebrates a point during his match against Rafael Nadal of Spain at the Wimbledon Tennis Championships in London, July 2, 2015. REUTERS/Stefan Wermuth 

Paraguay's goalie Justo Villar fails to stop a goal by Argentina's Angel Di Maria during their Copa America 2015 semi-final soccer match at Estadio Municipal Alcaldesa Ester Roa Rebolledo in Concepcion, Chile, June 30, 2015. REUTERS/Carlos Garcia Rawlins 

Serena Williams of the U.S.A. reacts after missing a point during her match against Timea Babos of Hungary at the Wimbledon Tennis Championships in London, July 1, 2015. REUTERS/Toby Melville 

Rafael Nadal of Spain shakes sweat of his head after winning his match against Thomaz Bellucci of Brazil at the Wimbledon Tennis Championships in London, June 30, 2015. REUTERS/Stefan Wermuth 

Alexis Sanchez (R) celebrates with teammates Mauricio Islas (C) and Angelo Henriquez after scoring his penalty kick during a shootout against Argentina in the Copa America 2015 final soccer match at the National Stadium in Santiago, Chile, July 4, 2015. REUTERS/Ricardo Moraes 

Vasek Pospisil of Canada slips during his match against James Ward of Britain at the Wimbledon Tennis Championships in London, July 4, 2015. REUTERS/Stefan Wermuth

Formula One - F1 - British Grand Prix 2015 - Silverstone, England - 5/7/15
Williams' Felipe Massa makes a pit stop during the race
Reuters / Phil Noble

Formula One - F1 - British Grand Prix 2015 - Silverstone, England - 5/7/15
Mercedes' Lewis Hamilton celebrates his win on the podium with the trophy
Reuters / Phil Noble