Video: GMA Impact Jiu-Jitsu shares the moment six students earn their black belts
Michael Chapman, owner and head coach of GMA Impact Jiu-Jitsu in Beaverton, OR, has invited us to share the moment that six of his students…
Michael Chapman
Submission Wrestling League ready to kick off
GMA member Michael Chapman invites all for the 8th annual Sbmission Wrestling League, this coming spring. The leader of Impact Jiu-Jitsu is the organizer of…
Impact Jiu-Jitsu joins the GMA army
The GMA has a new member in the state of Oregon. Impact Jiu-Jitsu is our newest associate. The team's head coach is black belt Michael Chapman. The…