Phil Myers
With over 10 years of mixed martial arts experience, Phil Myers has dedicated his life to the practice and teaching of Brazilian jiu-jitsu. Phil is a Gracie Barra black belt under Roberto Maia and has taught at both Gracie Barra Boston and Gracie Barra New Hampshire. Phil has complimented his jiu-jitsu skills with extensive judo training, and competes actively at the local, national and international levels.

John McDonough
John has more than 20 years of experience in the martial arts. He has trained extensively in MMA, muay thai, Brazilian jiu-jitsu, catch wrestling, boxing & karate. Before joining the Combat Sports International training staff John taught MMA, muay thai & grappling at Sityodtong Boston, Integrated Fighting under Jason Godsey and New England Submission Fighting under Kirik Jenness. John is also an experienced cornerman and fighter manager.

Sean Matthews
Sean has practiced muay thai for over a decade. He has trained under Master Toddy in Las Vegas, Kru Toy at Sityodtong Thailand and at Sityodtong Boston. Sean has taught all levels of muay thai and MMA at Sityodtong Boston and is an experienced cornerman and cutman. In addition to his muay thai and MMA experience, Sean studies jiu jitsu under Gracie Barra’s Roberto Maia and Phil Myers and trains in the Dog Brother's Stick Fighting system under Greg Brown.

Travis Robertson
Travis has been fighting competitively for over 10 years. He has trained extensively in muay thai, MMA and boxing. His tenure includes Sityodtong Boston for seven years and under both Kru Toy and Kru Yoddecha at Sityodtong Thailand. As a trainer, he taught at Sityodtong Boston and as the head muay thai coach at Unit 2’s training facility in Atlanta, Georgia

Greg Brown
Greg has been involved in MMA since 1998 and in Muay Thai & Filipino Martial Arts since 1999.  Greg is an experienced competitor in MMA and in full contact stick fighting.  In addition to his competition experience Greg ran the Filipino Martial Arts program at Sityodtong Boston & was a Muay Thai trainer.  He considers his training under Dog Brothers founder Guru “Crafty Dog” Marc Denny to be the most influential on his development in the martial arts.  Greg, aka Cyborg Dog, is one of the few full Dog Brothers in the United States.

Al Bibeau
Al is a Gracie Barra Black Belt under Roberto Maia and is a full time instructor at Gracie Barra Boston.  He has been practicing Brazilian Jiu-Jitsu for over 12 years and is well versed both with and without the Gi.  Al is a seasoned competitor in BJJ and has trained extensively in both Judo & wrestling.

Billy Costello
Billy has been involved in boxing, as a competitor and trainer, for over 20 years.  He began his training at the Olympia Gym in Dorchester MA under the late Val Boston and trained at the Boston Sport Boxing Club.  Billy also trained in Muay Thai at Boston Muay Thai and holds a Blue Belt in Brazilian Jiu-Jitsu from American Top Team.

Peter Talieri
Peter is a black belt in judo and has more than 20 years of experience training in several martial arts. He trained in judo under Jimmy Pedro and previously studied jiu-jitsu at Rickson Gracie in Los Angeles . A former judo competitor, wrestler and boxer, he now focuses his training in both gi and no-gi jiu-jitsu.

George Birkadze
George has been involved with MMA for over 15 years and over the course of his careers has many awards and accolades to show for it. He his a kyoku shin kai black belt, BJJ brown belt, and black belt instructor of Sambo. Some of his awards include 1998 Moscow Kick-Boxing Champion, Russian Army Full-Contact Kyoku Shin Kai Champion 1997, and 2010 1st Place California Open Championship. George has fought in Russia, Spain, and the United States and has a professional MMA record of 4 wins and 1 loss (3 submissions wins and one by knockout).

David Crowell
David has over 20 years of boxing experience. He was trained by legendary trainer Val Boston and competed for 8 years as an amateur and professional fighter. As an amateur he was the 1991 Lowell Golden Gloves Champion representing New England in the 1991 National Golden Gloves; he was 1991 ABF New England Champion and the recipient of best fighter of the tournament award. He was undefeated in his 4 professional bouts. David has since trained and managed golden gloves champions and main event professional boxers. He has trained boxers out of the Olympia Gym, South Shore Boxing Club, South Shore PAL, Somerville Boxing, and more. He ran the boxing gym at Boston Muay Thai where he had the opportunity to train punching techniques to Muay Thai, Thai Kwon Do and MMA combatants.

Stan Schultz
Stan has been training in the martial arts for over eight years with a deep focus in Muay Thai. Stan began training at Sityodtong in Boston and complimented his training at the IMB Academy in New Jersey before joining the staff at Combat Sports Boston. Stan is a seasoned competitor and has participated in training camps for athletes competing in the UFC, Strikeforce and Bellator. Stan has complimented his Muay Thai knowledge with exploration of other styles and is well versed in western boxing, mma and no-gi and gi jiu-jitsu.

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