Kru Jeff Harrison has been involved in combat athletics since 1999. After beginning with Judo and Submission wrestling, his training in Muay Thai began under Kru Chris Kew and he has been fighting since 2000, coaching since 2001. His fighting career has seen roughly 50 fights and has taken him across North America, Brazil, Thailand, Mexico, and Europe. Jeff has won titles in Muay Thai and coached fighters to over 50 championship belts. He, along with Chris Kew were Arjan Berklerk Pinsinchai’s first North American students and has spent countless hours with the Muay Thai living legend, and even his teachers learning, living and readying for competition in Canada and throughout Thailand. Jeff has also worked with many boxing, wrestling, MMA, Muay Thai, and kickboxing coaches the world over. Jeff has trained in Brazilian Jiu-Jitsu for over 10 years, and has worked with many of the best the world has to offer. Jeff has cornered countless fights, from Muay Thai smokers to coaching in front of sold out areas at large promotions like TKO, ECC, Bellator, The Score Fighting Series and even the UFC. He is regarded as a top shelf Canadian MMA coach. He puts his passion and love for the art of MMA and Jiu-Jitsu into every single class and tries his absolute best for each one of the MAS Academy’s members.