On May 17, 2013, a 33-year-old Sébastien Demers (31-5, 11 KOs) and a 27-year-old British boxer James DeGale (14-1, 9 KOs) met in the ring.
Demers came in to the fight on a 3-fight losing streak with a 30% KO rate, and was fighting after a gap of 1 year, 6 months, and 12 days. DeGale was on a 4-fight win streak with a 60% KO rate, and fighting after a layoff of 5 months and 9 days.
James DeGale stopped Sébastien Demers via KO in the 2nd round. DeGale improves his record to 15-1 (10 KOs), while Demers adds a loss to his record at 31-6.
On November 5, 2011, a 31-year-old Sébastien Demers (31-4, 11 KOs) and a 32-year-old American boxer Allan Green (30-3, 21 KOs) met in the ring.
Demers came in to the fight on a 2-fight losing streak with a 31% KO rate, and was fighting after a gap of 11 months and 2 days. Green was on a 1-fight win streak with a 63% KO rate, and fighting after a layoff of 2 months and 23 days.
Allan Green defeated Sebastien Demers via unanimous decision in the 10-round fight. Green improves his record to 31-3, while Demers adds a loss to his record at 31-5.
On December 3, 2010, a 30-year-old Sébastien Demers (31-3, 11 KOs) and Renan St-Juste met in the ring in a super-middleweight bout.
Demers came in to the fight on a 1-fight losing streak with a 32% KO rate, and was fighting after a gap of 5 months and 22 days.
Sébastien Demers lost to Renan St-Juste via KO in the 2nd round, and adds an loss to his record at 31-4.
On June 11, 2010, a 30-year-old Sébastien Demers (31-2, 11 KOs) and Brian Vera met in the ring.
Demers came in to the fight on a 6-fight win streak with a 33% KO rate, and was fighting after a gap of 3 months and 5 days.
Sébastien Demers lost to Brian Vera via TKO in the 3rd round, and adds an loss to his record at 31-3.
On August 1, 2008, a 28-year-old Sébastien Demers (25-1, 9 KOs) and Dionisio Miranda met in the ring in a middleweight bout.
Demers came in to the fight on a 5-fight win streak with a 34% KO rate, and was fighting after a gap of 1 month and 26 days.
Sébastien Demers lost to Dionisio Miranda via split decision in the 10-round middleweight fight, and adds an loss to his record at 25-2.
On May 26, 2007, a 27-year-old Sébastien Demers (20-0, 9 KOs) got a shot at the middleweight IBF title held by 27-year-old Armenian boxer Arthur Abraham (22-0, 17 KOs).
Demers came in to the fight on a 20-fight win streak with a 45% KO rate, and was fighting after a gap of 3 months and 16 days. Abraham was on a 22-fight win streak with a 77% KO rate, and fighting after a layoff of 8 months and 3 days.
Arthur Abraham made easy work of Sébastien Demers, stopping the challenger via KO in the 3rd. Abraham improves his record to 23-0 (18 KOs), while Demers adds a loss to his record at 20-1.