24 year-old German swimmer from Halle and the current 200 and 400 metre freestyle long course world champion.
On July 28, 2009 he claimed his second gold in the 200 m freestyle, defeating Michael Phelps in a world record time of 1:42.00 seconds and cutting more than four seconds off of his time since last year.
Biedermann won the 200 m freestyle long course in the 2008 European Aquatics Championships final.
He also holds the long course and short course world records in these events.
