Swimming (Men's 200m medley, 400m medley and 200m butterfly)
Roebuck put in several impressive performances in the London 2012 qualifying event to secure his place in three disciplines at the Games. He shot to the top of the 200m butterfly world rankings at the competition when he registered the first sub 1:56 time of the year.
Roebuck rebounded from missing out on qualifying for the Beijing Olympics with two silver medals in the 200m and 400m individual medleys at the Delhi Commonwealth Games and 200m individual medley bronze at the European Championships in 2010.
Did you know?
The 6ft 2in swimmer is studying sports science at Loughborough University.