The youngest male on the 2010 Commonwealth Games swim team, Jayden Hadler made the final of the 200m butterfly, finishing fifth in Delhi. In 2011 he had a breakthrough win to claim his first national title in the 200m butterfly. The win secured him a spot on the World Championships team where he finished 18th overall in the 200m butterfly in Shanghai.
At the age of 18 Hadler made his Olympic Games debut in London. The teenager finished seventh (100m butterfly) and eighth (200m butterfly) in his heats at the 2012 Games.