GMA Alliance SF to host Rubens “Cobrinha” Charles this Sunday, Sept. 14

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GMA member Itabora Ferreira of Alliance Jiu-Jitsu San Francisco has announced that Rubens “Cobrinha” Charles Maciel will be teaching a seminar at his academy on Sunday, Sept. 14.

The 2013 ADCC champion and 8-time world champion will teach from 1:05 p.m. to 4:10 p.m.

4_GB72_StampSiteLearn the decorated techniques of his mastermind’s game.

Pre-registration is $119 + tax and at the door the cost will be $150 per person.

You can reserve your spot now here: 

For more information about GMA Alliance SF, visit

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