Maine's #1 Sub Only Grappling Promotion
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About
The Flow Sub-Only Open was founded by FlowBJJ in Rockland, Maine, built to bring high-level submission grappling to Mid-coast Maine and beyond. Every match ends by submission only or EBI overtime. No points. No decisions.
FSO runs two event formats: the Open Tournament — with full kids, women's, and men's gi and nogi bracket divisions — and Underground / Squads superfight events featuring elite teams from across the US and Canada, available in person and via livestream.
View EventsFSO Open
Full bracket tournaments — gi & nogi, kids through adults. Registration via Smoothcomp.
Underground
Team superfight events with elite grapplers. Live tickets available + online streaming on YouTube.
Squads
3-on-3 or 5-on-5 team events featuring academies from across New England and beyond.
Highlights
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Hosted by Hayden Martz & Ben Moore — beginners, competitors, mindset, and longevity in the sport.