NHL general managers (GMs) are a special breed and the numbers prove it. Maybe the most telling thing about an NHL general manager that separates him from his counterparts in other major sports is that he has most likely played the game at the professional level. 22 (of 32) are former pro players, as opposed to eight in the NBA and only one - Jerry Dipoto - in MLB. The average age of an NHL GM is 54.6 years old. The oldest being Lou Lamoriello (77) of the New York Islanders;