Don Mattingly has relaxed the Marlins' facial hair policy
Legendary mustache-haver Don Mattingly bans facial hair on Marlins
Yankees great Don Mattingly once spoke about his main gripe with his infamous haircut benching saga
New York Yankees appearance policy - Wikipedia
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Miami Marlins' New Manager Outlaws Facial Hair On His Players - Newsy
Miami Marlins' Don Mattingly called out for facial hair ban - Sports Illustrated
Miami Marlins' New Manager Outlaws Facial Hair On His Players - Newsy
Don Mattingly Enforcing No Facial Hair Policy On Florida Marlins
Don Mattingly enforces no-facial-hair policy for Marlins - The Washington Post
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