Watch - Olympic 200m freestyle champ Sun Yang's hilarious swimming cap celebration fail
China's Olympic 200m freestyle gold medallist Sun Yang fails to throw his swimming cap into the crowd at the Rio games.
Sun, who has served a lenient doping suspension since the London 2012 Games where he won two titles, responded to his defeat in the 400m freestyle on Sunday to win the 200m freestyle last night.
His celebration left a lot to be desired. Watch below: