The New York Yankees, since George M. Steinbrenner bought the team from CBS in 1973; he saw a team in disarray and with little discipline. He quickly instituted an appearance policy, the major part dictated a clean shaven well-kept look although trimmed mustaches were allowed. Over the years there have been some minor challenges to the policy, but it is still in effect under Hal Steinbrenners’ ownership.
Early on when the Yankees acquired Lou Pinella, he showed up with long hair. The “Boss” told him he had to cut his hair. Pinella wasn’t happy. He said if the Lord had long hair he could too.