The Shermanator was an amateur MMA fighter until his idol, Diego Sanchez, believed he should get a shot in the ring. Sanchez challenged Marquez to a professional fight in front of a crowd. Dedicating the fight to his late mother, Marquez won by locking Sanchez in an armbar. Since then, Issac “The Shermanator” Marquez has made a name for himself in the world of MMA.