For All Students: What is it like to be a sports agent for players and coaches? As part of the Gabelli Sports Speakers Series, Mook Williams is a 17 year licensed attorney, who recently retired as a certified pro football player agent, will discuss the ins and out of being an agent. He will also discuss representing coaches (who he continues to represent). Mr. Williams is a sports-industry innovator who has advised top athletes and coaches on matters both on and away from the field for over a decade.