The Marianas Open International Championship
Date: October 18, 2025
Where: UOG Calvo Field House
Tickets: Guamtime.net
The Marianas Open International Championship 2025 returns to Guam this October with a $50,000 prize pool and world-class Jiu-Jitsu athletes from around the globe. Witness champions of the Marianas Pro Series and top competitors battle it out at the University of Guam Field House.