SM
Light heavyweight · United States
Sean Monaghan 29-3-0 17 KO · 2010–2019
Sean Monaghan was a light heavyweight boxer from United States, born Aug 21, 1981. Record 29-3-0 with 17 knockouts over 2010–2019. Sean Monaghan last fought Callum Johnson on Mar 9, 2019 and lost by TKO in round 3 of 10.
Also: شون موناجان
Born Aug 21, 1981
Country 🇺🇸 United States
Stance Orthodox
Reach 184 cm
Nickname Seanie
Debut May 21, 2010
Career 2010–2019
Rounds boxed 164
KO share 59%
Born in Long Beach, New York, U.S.
Titles WBC Continental Americas and vacant WBO-NABO light heavyweight titles 2015
Boxerbook rating 1873 ± 165 · inactive since Mar 2019Why here › Confirmed bouts 7 of 32 · 3 official
Career record Record
29-3-0, 17 KOs · 2010–2019
Last result L
TKO 3/10 · Turning Stone Resort Casino, Verona, New York, 🇺🇸
The record 32 bouts, 2010–2019, newest first. Records under each bout are both boxers going in.
Bouts by source: English Wikipedia · 32, Nevada State Athletic Commission — Results · 3, Wikipedia (ru) · 1
L
TKO 3/10 · Turning Stone Resort Casino, Verona, New York, 🇺🇸
Monaghan 29-2-0 · Johnson 17-1-0
L
UD 10/10 · Aviator Sports and Events Center, New York City, 🇺🇸
Monaghan 29-1-0 · Barrera 21-2-0
W
Evert Bravo
UD 8/8 · Barclays Center, New York City, 🇺🇸
Monaghan 28-1-0 · Bravo —
L
TKO 2/10 · Nassau Coliseum, Uniondale, New York, 🇺🇸
Monaghan 28-0-0 · Browne 20-0-0
W
UD 10/10 · CenturyLink Center, Omaha, Nebraska, 🇺🇸
Monaghan 27-0-0 · Castaneda —
W
Janne Forsman
TKO 5/10 · The Theater at Madison Square Garden, New York City, 🇺🇸
Monaghan 26-0-0 · Forsman —
W
For WBC Continental Americas and vacant WBO-NABO light heavyweight titles UD 10/10 · Aviator Sports Complex, Brooklyn, 🇺🇸
Monaghan 25-0-0 · George 25-5-2
W
TKO 9/10 · The Theater at Madison Square Garden, New York City, 🇺🇸
Monaghan 24-0-0 · Zúñiga —
W
UD 10/10 · Prudential Center, Newark, New Jersey, 🇺🇸
Monaghan 23-0-0 · Conceição —
W
Daniel Regi
Retained WBC Continental Americas light-heavyweight title TKO 3/10 · Cosmopolitan Resort, Las Vegas, 🇺🇸
Monaghan 22-0-0 · Regi —
W
Retained WBC Continental Americas light-heavyweight title UD 10/10 · Barclays Center, New York City, 🇺🇸
Monaghan 21-0-0 · Muriqi —
W
Joe McCreedy
Retained WBC Continental Americas light-heavyweight title TKO 5/10 · MGM Grand Garden Arena, Las Vegas, 🇺🇸
Monaghan 20-0-0 · McCreedy —
W
Retained WBC Continental Americas light-heavyweight title TKO 1/10 · The Theater at Madsion Square Garden, New York City, 🇺🇸
Monaghan 19-0-0 · Vanda —
W
Anthony Caputo Smith
Retained WBC Continental Americas light-heavyweight title TKO 3/10 · Thomas & Mack Center, Las Vegas, 🇺🇸
Monaghan 18-0-0 · Smith —
W
Dion Stanley
TKO 1/8 · Radio City Music Hall, New York City, 🇺🇸
Monaghan 17-0-0 · Stanley —
W
UD 8/8 · The Theater at Madison Square Garden, New York City, 🇺🇸
Monaghan 16-0-0 · Cantrell —
W
Rayco Saunders
Retained WBC Continental Americas light-heavyweight title UD 10/10 · Roseland Ballroom, New York City, 🇺🇸
Monaghan 15-0-0 · Saunders —
W
George Armenta
TKO 3/10 · Roseland Ballroom, New York City, 🇺🇸
Monaghan 14-0-0 · Armenta —
W
Romaro Johnson
Won vacant WBC Continental Americas light-heavyweight title TKO 8/10 · Roseland Ballroom, New York City, 🇺🇸
Monaghan 13-0-0 · Johnson —
W
Eric Watkins
UD 6/6 · The Theater at Madison Square Garden, New York City, 🇺🇸
Monaghan 12-0-0 · Watkins —
Show all 32 bouts W
Billy Bailey
UD 8/8 · Roseland Ballroom, New York City, 🇺🇸
Monaghan 11-0-0 · Bailey —
W
Santos Martinez
KO 2/4 · Madison Square Garden, New York City, 🇺🇸
Monaghan 10-0-0 · Martinez —
W
Anthony Pietrantonio
TKO 5/6 · The Theater at Madison Square Garden, New York City, 🇺🇸
Monaghan 9-0-0 · Pietrantonio —
W
Kentrell Claiborne
TKO 4/6 · Boardwalk Hall, Atlantic City, 🇺🇸
Monaghan 8-0-0 · Claiborne —
W
Brian Bernard
KO 1/4 · Aviator Sports Complex, New York City, 🇺🇸
Monaghan 7-0-0 · Bernard —
W
Michael Glenn
UD 4/4 · BB King Blues Club & Grill, New York City, 🇺🇸
Monaghan 6-0-0 · Glenn —
W
Billy Cunningham
UD 4/4 · Foxwoods Resort Casino, Ledyard, Connecticut, 🇺🇸
Monaghan 5-0-0 · Cunningham —
W
Angel Gonzalez
TKO 3/4 · BB King Blues Club & Grill, New York City, 🇺🇸
Monaghan 4-0-0 · Gonzalez —
W
Nick Whiting
TKO 2/4 · Capitale, New York City, 🇺🇸
Monaghan 3-0-0 · Whiting —
W
Borngod Washington
MD 4/4 · BB King Blues Club & Grill, New York City, 🇺🇸
Monaghan 2-0-0 · Washington —
W
Dennis Penelton
KO 1/4 · Tropicana Casino & Resort, Atlantic City, New Jersey, 🇺🇸
Monaghan 1-0-0 · Penelton —
W
Simeon Trigueno
TKO 1/4 · Capitale, New York City, New York, 🇺🇸
Monaghan 0-0-0 · Trigueno —
Ratings now Not in any current ranking.
World titles No world title reigns recorded.
Facts
What is Sean Monaghan's record? Sean Monaghan's professional record is 29-3-0 with 17 knockouts.
Who did Sean Monaghan fight last? Sean Monaghan last fought Callum Johnson on Mar 9, 2019 and lost by TKO in round 3 of 10. Sources Boxerbook ID 17989 · permanent link boxerbook.com/id/17989 . Wikidata (CC0), English Wikipedia (CC BY-SA). Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.