2016 Rio Olympics - Swimming - Final - Men's 100m Butterfly Final - Olympic Aquatics Stadium - Rio de Janeiro, Brazil - 12/08/2016. Joseph Schooling (SIN) of Singapore competes on his way to winning the gold.    TSRIO2016 REUTERS/Stefan Wermuth

Joseph Schooling of Singapore diving in at the start of the 100m butterfly race. (Photo 2 © TSRIO2016 Reuters/Stefan Wermuth)