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MLB standardizing ball rubbing and removal from humidors

Diamondbacks Padres Baseball
Posted at 12:45 PM, Jun 21, 2022
and last updated 2022-06-21 15:45:23-04

Major League Baseball is standardizing procedures for rubbing baseballs and their removal from humidors in an effort to establish more consistency amid complaints about slickness that followed the crackdown on sticky substances.

MLB has been working on standards over the course of the season in response to feedback from players and sent a memorandum outlining the changes. MLB is mandating a ball be stored in a humidor for at least 14 days before game use, and ball storage must be recorded in a signed form by the clubhouse manager.

“All baseballs projected to be used in a specific game must be mudded within three hours of all other baseballs being used in that game, and must be mudded on the same day that they are going to be used,” the memo states. “Baseballs should not be out of the humidor for more than two hours at any point prior to first pitch, and if it will take club staff longer than two hours, the baseballs should be pulled out of the humidor in smaller batches.”