SD
Super middleweight · Canada
Sébastien Demers 31-6-0 11 KO · 2004–2013
Updated Oct 12, 2026 · Sources: Wikidata, English Wikipedia, Wikipedia (ru)
Sébastien Demers was a super middleweight boxer from Canada, born Dec 24, 1979. Record 31-6-0 with 11 knockouts over 2004–2013. Sébastien Demers last fought James DeGale on May 17, 2013 and lost by KO in round 2 of 8.
Also: Себастьян Демерс · Sebastien Demers · Демерс +3 more Демерс С. · Демерс Себастьян · Демерс, Себастьян
Born Dec 24, 1979
Country 🇨🇦 Canada
Stance Orthodox
Nickname Double Trouble
Debut Oct 9, 2004
Career 2004–2013
Rounds boxed 249
KO share 35%
Born in St. Hyacinthe, Quebec, Canada
Titles NABF super middleweight title 2009
Boxerbook rating 1730 ± 185 · inactive since May 2013Why here › Confirmed bouts 3 of 37
Career record Record
31-6-0, 11 KOs · 2004–2013
Last result L
KO 2/8 · Casino du Lac-Leamy, Gatineau, Quebec, 🇨🇦
The record 37 bouts, 2004–2013, newest first. Records under each bout are both boxers going in.
Bouts by source: English Wikipedia · 37, Wikipedia (ru) · 1
L
KO 2/8 · Casino du Lac-Leamy, Gatineau, Quebec, 🇨🇦
Demers 31-5-0 · DeGale 14-1-0
L
UD 10/10 · Colisée Pepsi, Quebec City, Quebec, 🇨🇦
Demers 31-4-0 · Green —
L
For vacant WBO–NABO super middleweight title KO 2/12 · Bell Centre, Montreal, 🇨🇦
Demers 31-3-0 · St-Juste —
L
TKO 3/10 · Uniprix Stadium, Montreal, 🇨🇦
Demers 31-2-0 · Vera —
W
MD 10/10 · Montreal Casino, Montreal, 🇨🇦
Demers 30-2-0 · Joppy 39-5-1
W
Nicholson Poulard
Won vacant NABF super middleweight title UD 12/12 · Montreal Casino, Montreal, 🇨🇦
Demers 29-2-0 · Poulard —
W
Jose Spearman
KO 1/8 · Bell Centre, Montreal, 🇨🇦
Demers 28-2-0 · Spearman —
W
Alfredo Contreras
UD 8/8 · Montreal Casino, Montreal, 🇨🇦
Demers 27-2-0 · Contreras —
W
Martin Berthiaume
RTD 5/10 · Montreal Casino, Montreal, 🇨🇦
Demers 26-2-0 · Berthiaume —
W
UD 10/10 · Montreal Casino, Montreal, 🇨🇦
Demers 25-2-0 · McCrary —
L
Dionisio Miranda
For vacant NABA middleweight title SD 10/10 · Gare Windsor Salle des Pas Perdus, Montreal, 🇨🇦
Demers 25-1-0 · Miranda —
W
Sam Hill
UD 8/8 · Uniprix Stadium, Montreal, 🇨🇦
Demers 24-1-0 · Hill —
W
Retained IBF International middleweight title UD 12/12 · Montreal Casino, Montreal, 🇨🇦
Demers 23-1-0 · Vanda —
W
Thomas Brown
UD 8/8 · Hard Rock Live, Hollywood, Florida, 🇺🇸
Demers 22-1-0 · Brown —
W
Mohammad Said Salem
Retained IBF International middleweight title UD 12/12 · Montreal Casino, Montreal, 🇨🇦
Demers 21-1-0 · Salem —
W
Retained IBF International middleweight title UD 12/12 · Montreal Casino, Montreal, 🇨🇦
Demers 20-1-0 · Smichet —
L
For IBF middleweight title KO 3/12 · Jako Arena, Bamberg, 🇩🇪
Demers 20-0-0 · Abraham 23-0-0
W
Ian MacKillop
TKO 3/10 · Montreal Casino, Montreal, 🇨🇦
Demers 19-0-0 · MacKillop —
W
Ian MacKillop
Won vacant IBF International middleweight title UD 12/12 · Palais des Sports Léopold-Drolet, Sherbrooke, 🇨🇦
Demers 18-0-0 · MacKillop —
W
Stephane Desormiers
Retained Canada light middleweight title UD 10/10 · Montreal Casino, Montreal, 🇨🇦
Demers 17-0-0 · Desormiers —
Show all 37 bouts W
UD 10/10 · Le Mirage, Saint-Leonard, Quebec, 🇨🇦
Demers 16-0-0 · Henry —
W
TKO 7/10 · Métropolis, Montreal, 🇨🇦
Demers 15-0-0 · Davis —
W
TKO 6/12 · Montreal Casino, Montreal, 🇨🇦
Demers 14-0-0 · Thiam —
W
Elio Ortiz
TKO 4/10 · Montreal Casino, Montreal, 🇨🇦
Demers 13-0-0 · Ortiz —
W
Luiz Augusto Dos Santos
UD 8/8 · Université, Sherbrooke, Quebec, 🇨🇦
Demers 12-0-0 · Santos —
W
Calvin Shakir
TKO 2/8 · Casino du Lac-Leamy, Gatineau, 🇨🇦
Demers 11-0-0 · Shakir —
W
Ian MacKillop
Retained Canada light middleweight title UD 10/10 · Montreal Casino, Montreal, 🇨🇦
Demers 10-0-0 · MacKillop —
W
Claudio Ortiz
Won vacant Canada light middleweight title UD 10/10 · Bell Centre, Montreal, 🇨🇦
Demers 9-0-0 · Ortiz —
W
UD 6/6 · Le Colibri, Victoriaville, Quebec, 🇨🇦
Demers 8-0-0 · Smith —
W
Sammy Sparkman
UD 6/6 · Montreal Casino, Montreal, 🇨🇦
Demers 7-0-0 · Sparkman —
W
Presente Brito
TKO 3/6 · Casino du Lac-Leamy, Gatineau, Quebec, 🇨🇦
Demers 6-0-0 · Brito —
W
Anthony Ivory
UD 6/6 · Montreal Casino, Montreal, 🇨🇦
Demers 5-0-0 · Ivory —
W
Aundalen Sloan
UD 6/6 · Bell Centre, Montreal, 🇨🇦
Demers 4-0-0 · Sloan —
W
Greg Bazile
UD 6/6 · Club Soda, Montreal, 🇨🇦
Demers 3-0-0 · Bazile —
W
Felix Vargas
TKO 3/4 · Montreal Casino, Montreal, 🇨🇦
Demers 2-0-0 · Vargas —
W
Darren Kenny
TKO 2/4 · Club Soda, Montreal, 🇨🇦
Demers 1-0-0 · Kenny —
W
John Vaughan
TKO 1/4 · Montreal Casino, Montreal, Quebec, 🇨🇦
Demers 0-0-0 · Vaughan —
Ratings now Not in any current ranking.
World titles No world title reigns recorded.
Facts
What is Sébastien Demers's record? Sébastien Demers's professional record is 31-6-0 with 11 knockouts.
Who did Sébastien Demers fight last? Sébastien Demers last fought James DeGale on May 17, 2013 and lost by KO in round 2 of 8. Sources Boxerbook ID 10980 · permanent link boxerbook.com/id/10980 . Wikidata (CC0), English Wikipedia (CC BY-SA). Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.