Grudge Training Center

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Grudge Training Center
Est. 2009
Founded by Trevor Wittman
Primary trainers Trevor Wittman, Jake Ramos, Luke Caudillo
Training facilities Arvada, Colorado

Grudge Training Center (GTC) was a mixed martial arts training center founded by coach Trevor Wittman in 2009. Originally located in Wheat Ridge, Colorado, GTC relocated to Arvada, Colorado in 2013. The gym was an affiliate of Jackson's Submission Fighting.[1] To devote more attention to his sports equipment company ONX Sports, Wittman closed Grudge in November 2016,[2] with Grudge trainer Jake Ramos opening the Genesis Training Center to assume most of Grudge's former personnel, membership and operations.[3]

Notable fighters[edit]

Notable and recurring trainees under Trevor Wittman


  1. ^
  2. ^ Garcia, Raphael; Humes, Schwan (5 May 2017). MMA Ratings Podcast: 5.4.2017 (Podcast). MMA Ratings Podcast. Event occurs at 24:28. Retrieved 5 May 2017. 
  3. ^ Jacob Ramos Genesis Training Center. Arvada, Colorado: Shell Shock MMA. 24 December 2016. Retrieved 6 May 2017. 

External links[edit]