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Next Event — October 25, 2026

Flow Sub Only

Maine's #1 Sub Only Grappling Promotion

Register for FSO Open 9 Event Details

Upcoming Event

FSO Open 9
Summer Open

Date October 25, 2026  ·  9:00 AM
Venue Oceanside High School, Rockland, ME
Entry $75 Gi + NoGi  ·  $20 Absolute
Spectators $15  ·  Kids under 10 free  ·  1 black belt coach per team free
Register on Smoothcomp Full Details

Compete In

Kids Gi & NoGi
Women's Gi & NoGi
Men's Gi & NoGi
Absolute Men's & Women's NoGi

Plus pre-scheduled high level superfights throughout the day.

Flow Sub Only competition

About

What Is
Flow Sub Only?

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. 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 Events

FSO Open

Full bracket tournaments — gi & nogi, kids through adults. Registration via Smoothcomp.

Underground / Squads

Team superfight events with elite grapplers. Live tickets available + online streaming on YouTube.

Squad5

5-on-5 team format. High-intensity. US and Canada teams competing head-to-head.

Highlights

See It In Action

Resources

Rules & Information

Allowable
Submissions Match
Format EBI Overtime
Rules Weight
Classes Divisions Uniforms
/ Gi

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