The Yankees used to ban players from wearing beards.
GM Bob Howsam had a rule for the Cincinnati Reds – that they would be a clean-cut bunch, with no facial hair, no long hair and suit jackets for traveling from city to city. Sparky Anderson was the enforcer for those rules, and a true believer in them. Self-discipline, Sparky believed, led to better teamwork. Hall of Fame manager.
Go back and notice the difference in Randy Johnson’s appearance between his days on the Yankees and his days on the Mariners and Diamondbacks.