Here's another change from past staff that UM players love
Close shave for Marlins as team bans facial hair – Sun Sentinel
Don Mattingly, Marlins lift ban on facial hair
Don Mattingly's tenure as Marlins manager ends
The Marlins changed their dumb facial hair policy, so players can
Mattingly removes no facial hair policy
The Marlins relaxed their facial hair rules, so here are five
Don Mattingly to return as Miami Marlins manager in 2022, GM Kim
Don Mattingly enforces no-facial-hair policy for Marlins - The
Don Mattingly has relaxed the Marlins' facial hair policy
Don Mattingly's tenure as Marlins manager ends
Why can't you have a beard on the Yankees? - Quora