Report: MLB Umpires May Randomly Check Pitchers for Foreign

Baseball - Wikipedia

MLB intends to increase enforcement of sticky-stuff checks in 2023

The Twins, sticky stuff, and spin rate - Twinkie Town

MLB asks umpires for heightened sticky substance checks

MLB threatens pitchers with 10-game bans for altering balls

MLB sets guidelines on foreign substances

MLB steps up ball monitoring to suppress foreign substances

MLB pitchers may be fined

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