Héctor Santiago ejected after glove inspection
Umpire Substance Checks Put Pitchers in Awkward Positions - The New York Times
With substance checks in full swing, pitchers league-wide are less than pleased - The Boston Globe
2021 pitch doctoring controversy - Wikipedia
MLB asks umpires for heightened sticky substance checks
MLB asks umps for more random checks on sticky substances, Sports
MLB has signaled a crackdown on pitchers using foreign substances on the ball - Bleed Cubbie Blue
Phillies' Joe Girardi is glad MLB is cracking down on pitchers' using foreign substances
MLB trade rumors and news: Things get weird during foreign substance checks, Franco homers for first major league hit - MLB Daily Dish
MLB Tightening Up Policy on Sticky Substances to Stop Pitchers Cheating - InsideHook
MLB's crackdown on foreign substances begins today - Bleed Cubbie Blue
Yankees Pitcher Suspended Over 'Foreign Substance' On Neck : The Two-Way : NPR
MLB Announces Crackdown on Illegal Foreign Substances - Umpires Instructed to Inspect Pitchers