Exciting news coming from Chekmat HQ. Leo Vieira has decided to accept the ADCC superfight offer.  Just a month after return to competition at Berkut Grand Prix 6, Vieira decided to step in as a late day replacement for Frank Mir. Leo is the eldest of the Vieira brothers (Ricardo and Leandro), who lead … Continue reading Leo Vieira Is In as ADCC Superfight Replacement