Grudge Training Center (GTC) was a
mixed martial arts
Mixed martial arts (MMA) is a full-contact fighting combat sport, sport based on strike (attack), striking and grappling; incorporating techniques from various combat sports from around the world.
In the early 20th century, various inter-s ...
training center founded by coach
Trevor Wittman
Trevor Wittman (born March 5, 1974) is an American boxing and mixed martial arts coach. He is the founder of ONX Sports, a combat sports equipment company based in Golden, Colorado.
Training career
Compelled to retire from boxing at 21 years old ...
in 2009. Originally located in
Wheat Ridge, Colorado
The City of Wheat Ridge is a home rule municipality located in Jefferson County, Colorado, United States. Wheat Ridge is located immediately west of Denver and is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The ...
, GTC relocated to
Arvada, Colorado
Arvada () is a home rule city located in Jefferson and Adams counties, Colorado, United States. The city population was 124,402 at the 2020 United States census, with 121,510 residing in Jefferson County and 2,892 in Adams County. Arvada is ...
in 2013. The gym was an affiliate of
Jackson's Submission Fighting
Jackson Wink MMA Academy (formerly known as Jackson's Submission Fighting) is a mixed martial arts gym based in Albuquerque, New Mexico. The gym has been featured in several sports documentaries and has been called one of the best MMA gyms in th ...
. Wittman closed Grudge in November 2016.
Notable fighters
*
Rose Namajunas
Rose Gertrude Namajunas (born June 29, 1992) is an American professional mixed martial artist. She currently competes in the women's Flyweight division of the Ultimate Fighting Championship (UFC), and is a former two-time UFC Women's Strawweight ...
– Former 2x
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
Women's Strawweight Champion
*
Nate Marquardt
Nathan Joel Marquardt (born April 20, 1979) is an American mixed martial artist who competed in the middleweight and welterweight division of the Ultimate Fighting Championship. A professional competitor since 1999, he is a former Strikeforce W ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Pat Barry –
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Justin Gaethje –
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
Former Interim Lightweight champion
*
Brandon Girtz –
Bellator
Bellator, warrior in Latin, may refer to:
* Bellator MMA, a mixed martial arts promotion based in the United States
* Bishop Bellator of Sufetula (5th century)
Taxonomy
* ''Bellator'' (fish), a fish genus in the family Triglidae (sea robins)
** ...
*
Justin Salas
Justin Bernard Salas (born March 13, 1982) is an American mixed martial artist who competes as a lightweight. He was signed with the Ultimate Fighting Championship from 2012 to 2016.
Background
Salas is from Green River, Wyoming, and had a very ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Luke Caudillo
Luke Caudillo (born November 30, 1980) is an American former mixed martial artist. A professional from 2003 until 2012, he fought in the UFC.
Mixed martial arts career Ultimate Fighting Championship
Caudillo made his UFC debut at UFC Fight Nigh ...
–
Strikeforce
Strike Force may refer to:
Arts, entertainment, and media Games
*Strike Force (video game), ''Strike Force'' (video game), a 1991 arcade game
*''Commandos: Strike Force'', a 2006 video game
*''Dynasty Warriors: Strikeforce'', a 2009 video game
*' ...
,
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Tyler Stinson –
Bellator
Bellator, warrior in Latin, may refer to:
* Bellator MMA, a mixed martial arts promotion based in the United States
* Bishop Bellator of Sufetula (5th century)
Taxonomy
* ''Bellator'' (fish), a fish genus in the family Triglidae (sea robins)
** ...
,
Strikeforce
Strike Force may refer to:
Arts, entertainment, and media Games
*Strike Force (video game), ''Strike Force'' (video game), a 1991 arcade game
*''Commandos: Strike Force'', a 2006 video game
*''Dynasty Warriors: Strikeforce'', a 2009 video game
*' ...
*
Brandon Thatch
Brandon Michael Mathew Thatch (born July 11, 1985) is an American professional mixed martial artist who most recently competed in the Welterweight division of the Ultimate Fighting Championship.
Background
Thatch was adopted at age five by his m ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Justin Wren
Justin Christopher Wren (born April 27, 1987) is an American humanitarian worker and former professional mixed martial artist, who competed in the Heavyweight (MMA), heavyweight division of Bellator MMA. A professional competitor since 2006, Wre ...
–
Bellator
Bellator, warrior in Latin, may refer to:
* Bellator MMA, a mixed martial arts promotion based in the United States
* Bishop Bellator of Sufetula (5th century)
Taxonomy
* ''Bellator'' (fish), a fish genus in the family Triglidae (sea robins)
** ...
*
Shane Carwin
Shane Bannister Carwin (born January 4, 1975) is an American former mixed martial artist who competed in the Heavyweight division of the Ultimate Fighting Championship (UFC), where he is a former Interim UFC Heavyweight Champion. He is considere ...
– Former
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
Interim Heavyweight champion
*
Rashad Evans
Rashad Evans (born September 25, 1979) is an American retired mixed martial arts, mixed martial artist who competed in the Light Heavyweight (MMA), Light Heavyweight division. Evans started his professional MMA career in 2003, and was the Heavyw ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
Hall of Famer
*
Duane Ludwig
Duane Paul Ludwig (born August 4, 1978) is an American mixed martial arts coach, retired professional kickboxer and mixed martial artist.
Ludwig formerly held the unofficial fastest knockout record in the UFC after his win against Jonathan Go ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Ed Herman
Edward Benson Herman (born October 2, 1980) is an American former professional mixed martial artist who competed in the Light Heavyweight division of the Ultimate Fighting Championship. A professional competitor from 2003 to 2023, Herman was a ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Todd Duffee
Todd Duffee (born December 6, 1985) is an American mixed martial artist who competes in the Heavyweight division of Konfrontacja Sztuk Walki (KSW). He trains predominantly with the Combat Sports Academy and the American Kickboxing Academy in Cal ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Melvin Guillard
Melvin Guillard (born March 30, 1983) is an American mixed martial artist who competes in the Middleweight division.
Guillard most notably competed in the Lightweight division of the Ultimate Fighting Championship (UFC), Bellator MMA and World S ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Brendan Schaub
Brendan Peter Schaub (born March 18, 1983) is an American podcast host, former professional mixed martial artist, and stand-up comedian. He is the host of '' The Fighter and the Kid'' podcast, the ''Below the Belt with Brendan Schaub'' podcast ...
– runner-up on ''
The Ultimate Fighter: Heavyweights''
*
Jon Jones
Jonathan Dwight Jones (born July 19, 1987) is an American professional mixed martial arts, mixed martial artist. He currently competes in the Heavyweight (MMA), Heavyweight division of the Ultimate Fighting Championship (UFC), where he is the ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
Former Light-Heavyweight Champion
*
Gerald Harris –
WSOF
*
John Howard
John Winston Howard (born 26 July 1939) is an Australian former politician who served as the 25th prime minister of Australia from 1996 to 2007. He held office as leader of the Liberal Party of Australia. His eleven-year tenure as prime min ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Jared Hamman
Jared Hamman (born March 7, 1982) is an American mixed martial artist that competes in the World Series of Fighting's Middleweight division. A professional competitor since 2006, he has also formerly competed for the UFC, Strikeforce and ShoXC.
...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Tyler Toner
Tyler Toner is an American former professional mixed martial arts fighter. A professional from 2005 until 2014, he fought in the UFC, WEC, Strikeforce, and the RFA.
Background
Born and raised in Colorado, Toner began training in Taekwondo at ag ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
James McSweeney
James McSweeney (born 24 October 1980) is a British retired kickboxer and mixed martial artist. A professional since 2005, McSweeney is best known for being a cast member of Spike TV's '' The Ultimate Fighter: Heavyweights'' and competing in th ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Paul Buentello
Paul Anthony Buentello (born January 16, 1974) is an American former mixed martial artist. A professional competitor from 1997 to 2017, Buentello competed in the UFC, Bellator, Strikeforce, Affliction, King of the Cage, Shark Fights, ACB, Lega ...
–
Bellator
Bellator, warrior in Latin, may refer to:
* Bellator MMA, a mixed martial arts promotion based in the United States
* Bishop Bellator of Sufetula (5th century)
Taxonomy
* ''Bellator'' (fish), a fish genus in the family Triglidae (sea robins)
** ...
, Shark Fights
*
Cody Donovan –
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Eliot Marshall –
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Alvin Robinson
Alvin Leavon Robinson (born July 16, 1982) is an American professional mixed martial artist currently fighting as a lightweight for the Bellator Fighting Championships. He is a former Ring of Fire lightweight champion. He holds a professional re ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
;Notable and recurring trainees under
Trevor Wittman
Trevor Wittman (born March 5, 1974) is an American boxing and mixed martial arts coach. He is the founder of ONX Sports, a combat sports equipment company based in Golden, Colorado.
Training career
Compelled to retire from boxing at 21 years old ...
*
Stipe Miocic
Stipe Miocic (born August 19, 1982) is an American former professional mixed martial artist who currently works as a firefighter. He competed in the Heavyweight division of the Ultimate Fighting Championship (UFC), where he is a former two-time ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
Former Heavyweight Champion
*
Neil Magny
Aoutneil Jacques "Neil" Magny (born August 3, 1987) is an American professional mixed martial artist. He currently competes in the Welterweight division of the Ultimate Fighting Championship (UFC). A professional since 2010, Magny made a name ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Donald Cerrone
Donald Anthony Cerrone (born March 29, 1983), known professionally by his nickname "Cowboy", is an American former professional mixed martial artist, kickboxer, and actor. He competed in the Lightweight and Welterweight divisions of the Ultima ...
–
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
*
Georges St-Pierre
Georges St-Pierre (; born May 19, 1981), also known by his initials GSP, is a Canadian former professional mixed martial artist. He is widely regarded as one of the greatest fighters in mixed martial arts (MMA) history. St-Pierre was a two-divi ...
– Former
UFC
The Ultimate Fighting Championship (UFC) is an American mixed martial arts (MMA) promotion company based in Las Vegas, Nevada. It is owned and operated by TKO Group Holdings, a majority owned subsidiary of Endeavor Group Holdings. The larg ...
Welterweight & Middleweight Champion
References
External links
*
{{MMA Team List
Mixed martial arts training facilities