That is from MLB’s rulebook. It is not my rule. However, the player is in uniform and is mingling with a spectator, which is not allowed before or doing a game. I find it surprising that MLB would go out of its way to show a player violating a rule.
El Mago always has time for the fans. #PlayersWeekend pic.twitter.com/Gt22OLP3dP
— MLB (@MLB) August 25, 2019
Clearly the rule is stupid, but it is a rule.
Since MLB does not enforce their own rules, I encourage the Mets to WEAR THE CAPS!!