South African swimmer who won the 200 meter gold and silver in the 100 meter butterfly at the 2012 London Olympics. He went on to win a silver medal in the 200 meter freestyle and 100 meter butterfly in the 2016 Summer Olympics.
He made his competitive swimming debut at age 10.
He won the Overall Swimming World Cup in 2011, 2013, and 2014. He was named SwimSwam's Male Swimmer of the Year in 2014.
He has a younger brother named Jordan. He began swimming from a very young age.
He defeated Michael Phelps to win his first Olympic gold medal.