The New Stickiness Guideline for MLB Umpires

Mets left 'angry' over puzzling Drew Smith ejection for sticky stuff, implore MLB to use spin rates

Better late than never, baseball makes the right call with sticky stuff

It's a sticky situation': Mariners pitchers weigh in on MLB rule change on foreign substances

Rob Manfred on Inspections: 'We're Moving the Game in the Right Direction' - The New York Times

2021 pitch doctoring controversy - Wikipedia

Max Scherzer Suspended 10 Games Over Foreign Substance Rule - The New York Times

NY Mets: Pair of pitchers struggling since the “sticky stuff” crackdown

MLB will skip sticky-stuff checks at 2021 All-Star Game, per report

MLB will slap 10-game bans on pitchers caught using sticky substances – Daily Democrat

MLB asks umps for more random checks on sticky substances

MLB Memo: Umpires Told to Increase 'Frequency and Scope' of 'Sticky Stuff' Checks, News, Scores, Highlights, Stats, and Rumors

Nationals' Max Scherzer unhappy over substance checks: 'I'll take off all my clothes

MLB Announces Crackdown on Illegal Foreign Substances - Umpires Instructed to Inspect Pitchers

The New Stickiness Guideline for MLB Umpires