On February 10, 2007, a 27-year-old Sébastien Demers (19-0, 8 KOs) and Ian MacKillop met in the ring for the 3rd time,.
Demers came in to the fight on a 19-fight win streak with a 42% KO rate, and was fighting after a gap of 2 months and 16 days.
In the rematch, Sébastien Demers stopped Ian MacKillop via TKO in the 3rd round. Demers improves his record to 20-0 (9 KOs)
On April 5, 2008, a 28-year-old Sébastien Demers (23-1, 9 KOs) and Matt Vanda met in the ring in a middleweight bout.
Demers came in to the fight on a 3-fight win streak with a 37% KO rate, and was fighting after a gap of 2 months and 25 days.
Sébastien Demers defeated Matt Vanda via unanimous decision in the 12-round middleweight fight. Demers improves his record to 24-1
On September 15, 2007, a 27-year-old Sébastien Demers (20-1, 9 KOs) and Walid Smichet met in the ring in a middleweight bout.
Demers came in to the fight on a 1-fight losing streak with a 42% KO rate, and was fighting after a gap of 3 months and 20 days.
Sébastien Demers defeated Walid Smichet via unanimous decision in the 12-round middleweight fight. Demers improves his record to 21-1
On September 25, 2009, a 29-year-old Sébastien Demers (28-2, 10 KOs) and Jose Spearman met in the ring.
Demers came in to the fight on a 3-fight win streak with a 33% KO rate, and was fighting after a gap of 3 months and 19 days.
Sébastien Demers stopped Jose Spearman via KO in the 1st round. Demers improves his record to 29-2 (11 KOs)
On October 29, 2005, a 25-year-old Sébastien Demers (11-0, 4 KOs) and Calvin Shakir met in the ring.
Demers came in to the fight on a 11-fight win streak with a 36% KO rate, and was fighting after a gap of 1 month and 19 days.
Sébastien Demers stopped Calvin Shakir via TKO in the 2nd round. Demers improves his record to 12-0 (5 KOs)
On November 29, 2008, a 28-year-old Sébastien Demers (25-2, 9 KOs) and Donny McCrary met in the ring.
Demers came in to the fight on a 1-fight losing streak with a 33% KO rate, and was fighting after a gap of 3 months and 28 days.
Sébastien Demers defeated Donny McCrary via unanimous decision in the 10-round fight. Demers improves his record to 26-2
On July 13, 2006, a 26-year-old Sébastien Demers (16-0, 8 KOs) and Christopher Henry met in the ring.
Demers came in to the fight on a 16-fight win streak with a 50% KO rate, and was fighting after a gap of 1 month and 19 days.
Sébastien Demers defeated Christopher Henry via unanimous decision in the 10-round fight. Demers improves his record to 17-0
On April 16, 2005, a 25-year-old Sébastien Demers (8-0, 4 KOs) and Verdell Smith met in the ring.
Demers came in to the fight on a 8-fight win streak with a 50% KO rate, and was fighting after a gap of 1 month and 4 days.
Sébastien Demers defeated Verdell Smith via unanimous decision in the 6-round fight. Demers improves his record to 9-0
On December 10, 2005, a 25-year-old Sébastien Demers (13-0, 5 KOs) and Elio Ortiz met in the ring.
Demers came in to the fight on a 13-fight win streak with a 38% KO rate, and was fighting after a gap of 21 days.
Sébastien Demers stopped Elio Ortiz via TKO in the 4th round. Demers improves his record to 14-0 (6 KOs)
On March 7, 2009, a 29-year-old Sébastien Demers (26-2, 9 KOs) and Martin Berthiaume met in the ring.
Demers came in to the fight on a 1-fight win streak with a 32% KO rate, and was fighting after a gap of 3 months and 7 days.
Sébastien Demers stopped Martin Berthiaume via RTD in the 5th round. Demers improves his record to 27-2 (10 KOs)