Career
Simon has twice fought for major world boxing titles. On March 13, 2009, he lost a unanimous decision to Arthur Abraham for the IBF middleweight title. On December 9, 2011, he lost by a first round knockout to Gennady Golovkin for the WBA (regular) middleweight title.
Simon also holds a victory over Elvin Ayala in a regional (USBA) title fight.