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The Mosquito

All About Greggie Rivera

The Mosquito
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Joined: 31 Dec 1969

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 'Greggie' Marcellino Rivera is a Black Belt under Ralph Gracie and trains/teaches in Nor-Cal at the SF (Kurt Osiander) and Marin MMA (Mikyo Riggs) academies. A long time friend to Scotty, was one of the original writers for OntheMat.com AKA "the mosquito"

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