Sébastien Demers has six losses against six opponents on his boxing record. For a list of Demers's best fights, refer to "Best fights of Sébastien Demers".
On May 17, 2013 Sébastien Demers faced off against James DeGale at age 33. He was coming in with a record of 31-6 (11), and DeGale was 27 years old and with a record of 14-1 (9). Demers lost the fight via 2nd-round KO.
On November 5, 2011 Sébastien Demers faced off against Allan Green at age 31. He was coming in with a record of 31-5 (11), and Green was 32 years old and with a record of 30-3 (21). Demers lost the fight via 10-round unanimous decision.
On December 3, 2010 Sébastien Demers faced off against Renan St-Juste in a super-middleweight bout at age 30. He was coming in with a record of 31-4 (11). Demers lost the fight via 2nd-round KO.
On June 11, 2010 Sébastien Demers faced off against Brian Vera at age 30. He was coming in with a record of 31-3 (11). Demers lost the fight via 3rd-round TKO.
On August 1, 2008 Sébastien Demers faced off against Dionisio Miranda in a middleweight bout at age 28. He was coming in with a record of 25-2 (9). Demers lost the fight via 10-round split decision.
On May 26, 2007 Sébastien Demers fought Arthur Abraham in a middleweight world-title fight for Abraham's IBF title. Demers was 27 years old and with a record of 20-1 (9), and Abraham was 27 years old and with a record of 22-0 (17). Demers lost the fight via 3rd-round KO.
