Jean-Marc Mormeck has six losses against six opponents on his boxing record. For a list of Mormeck's best fights, refer to "Best fights of Jean-Marc Mormeck".
On December 5, 2014 Jean-Marc Mormeck faced off against Mateusz Masternak at age 42. He was coming in with a record of 37-6 (23), and Masternak was 27 years old and with a record of 33-2 (24). Mormeck lost the fight via 10-round majority decision.
On March 3, 2012 Jean-Marc Mormeck fought Wladimir Klitschko in a heavyweight world-title fight for Klitschko's WBA (Super), IBF, WBO and The Ring titles. Mormeck was 39 years old and with a record of 36-5 (22), and Klitschko was 35 years old and with a record of 56-3 (48). Mormeck lost the fight via 4th-round KO.
On November 10, 2007 Jean-Marc Mormeck met David Haye in a cruiserweight (WBA (Unified), WBC, The Ring) world-title defense fight. Mormeck was 35 years old and with a record of 33-4 (22), and Haye was 27 years old and with a record of 19-1 (18). Mormeck lost the fight via 7th-round TKO and lost the titles.
On January 7, 2006 Jean-Marc Mormeck, the WBA (Unified), WBC and The Ring champion, met O'Neil Bell, the IBF champion, in a cruiserweight world-title unification fight. Mormeck was 33 years old and with a record of 31-3 (21), and Bell was 31 years old and with a record of 25-1-1 (23). Mormeck lost the fight via 10th-round KO and lost his titles.
On June 13, 1997 Jean-Marc Mormeck faced off against Dominique Mansare at age 25. He was coming in with a record of 3-2 (2). Mormeck lost the fight via 6-round points decision.
On May 22, 1997 Jean-Marc Mormeck faced off against Lee Manuel Ossie at age 24. He was coming in with a record of 3-1 (2). Mormeck lost the fight via 4-round points decision.
