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Coaching Staff

OC Rebels Leadership

Greg Guy - Director of Operations

Greg has been playing and coaching in Orange County since the early '90's.  He was an All-American Midfielder at El Toro HS in 1999, and played for 4 years at UC-Berkeley, where he was a team Captain and WCLL All-Star.  Since college, Greg has coached at all levels of the game and all over the world.  He was a High School head coach for 8 years before turning his focus toward youth lacrosse.  Since the foundation of the Rebels in 2012, Greg has coached all ages and formats of youth lacrosse.  He lives in Lake Forest with his wife, daughter and dog.

Isaac Miller - Director of Communications

Isaac has been around Southern California lacrosse most of his life.  He played in HS in San Diego before playing in college as a 4 year starter at Humboldt State.  From there, he returned to San Diego to work with several different club teams, including RC Lacrosse, West Coast Starz and Bishops High School.  Currently, Isaac serves as our Director of Communications, as well as a Head Coach for several different teams.  He is also coaching with the So Cal Express lacrosse club and working as a JV coach for Santa Margarita Catholic HS.  Isaac lives in Laguna Niguel with his new wife Hallie and dog Brady.

Adam Guy - Director of Player Development

Adam began playing lacrosse shortly after Greg.  He was an All-American Defender at El Toro HS, and played for 4 years at Ohio Wesleyan University, where he was a team Captain and NCAC All-Star.  Adam is currently the Head Coach at Santa Margarita Catholic High School, and also coaches the SoCal Express elite travel teams.  Adam coaches all levels of our youth programs, and helps to train our coaching staff to ensure our players are getting the best experience possible.  Adam lives in Aliso Viejo with his wife and 2 daughters.

JR Grubert - Head Coach All Levels

JR Grubert is a staple of Orange County lacrosse.  He played High School lacrosse at Santa Margarita, and moved on to play at Cal State Fullerton for 4 years.  JR has coached and played throughout California, the US and the world - having played and coached in Australia for a time.  JR is an integral part of our coaching team, with experience coaching all levels of players at both indoor and field.  JR coordinates many of our private lessons, and runs many OC Rebels clinics.  His energy, enthusiasm and love of the game continue to inspire Orange County players to learn and excel.

Additional OC Rebels Coaches Include:

  • Paddy Chester, 20+ years coaching & playing experience
  • Brandon Mayo, Tesoro HS, Concordia University '19, All-Star & All American.
  • Dylan Miles, Foothill HS, Concordia University '17
  • Tucker Page, Irvine HS, Concordia University '19
  • Eric Rubak, SMCHS, Bellarmine University '20
  • Tim Reynolds, Parent Volunteer

OC Rebels Coaching Opportunities

Are you interested in becoming a youth lacrosse coach with the OC Rebels? The Rebels organization is  looking for individuals who have a passion for youth lacrosse. OC Rebels coaches are required to bring excitement and enthusiasm to each session aiming to pull the best out of our players. Email us at for further coaching information.