Performance Boxing Trainer John Espada & John Joseph Quinlan of Greater Boston Fitness Gym @ Revere, MA. Posted on November 20, 2015 by Admin Performance Boxing Trainer John Espada & John Joseph Quinlan of Greater Boston Fitness Gym @ Revere, MA. “John Espada is one of the toughest guys I know in Boston and one I am honored to call my friend.” – John Quinlan 11/20/2015