Don Mattingly, Marlins lift ban on facial hair
Miami Marlins' New Manager Outlaws Facial Hair On His Players - Newsy
Don Mattingly out as Marlins manager - Fish Stripes
Don Mattingly has relaxed the Marlins' facial hair policy
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Don Mattingly on his way out as Marlins manager?
Yankees great Don Mattingly once spoke about his main gripe with his infamous haircut benching saga
Marlins reinstitute facial-hair ban under Don Mattingly
Marlins Morning News: Cremo offers Marlins season supply of facial grooming products - Fish Stripes
New York Yankees appearance policy - Wikipedia
Don Mattingly Enforcing No Facial Hair Policy On Florida Marlins
Why are the Yankees the only Major League baseball team that requires all players to shave clean? - Quora