He also competed in the 2011 world championships in Shanghai .
Larkin has a handful of medals already from national competition , having taken gold in the 200m IM in 2011 and a pair of silvers ( 400m IM and 200m backstroke ) the same year .
Larkin also competed in the 2011 world championships in Shanghai .
Larkin has a handful of medals already from national competition , having taken gold in the 200m IM in 2011 and a pair of silvers ( 400m IM and 200m backstroke ) the same year .