What's sticky about Pine Tar in Major League Baseball? Meet the leagues worst kept secret

MLB leans on longtime mud supplier, not Rawlings, to coat balls - Sports Illustrated

Inside the Not-so-Secret Art of Pitchers Using Foreign Substances on the Mound, News, Scores, Highlights, Stats, and Rumors

What's sticky about Pine Tar in Major League Baseball? Meet the leagues worst kept secret

MLB Hall of Fame catcher Johnny Bench on sticky baseball controversy

Jason Turbow, The Baseball Codes

Let's talk about the sticky stuff in baseball - Royals Review

MLB to step up 'sticky stuff' checks on pitchers amid crackdown on illegal foreign substances, per report

MLB's Darkest Secrets

Major League Baseball has a sticky stuff enforcement problem : r/baseball

Jason Turbow, The Baseball Codes

MLB pitchers cheat, too. They use pine tar instead of trash cans. - The Washington Post

Baseball's latest dirty secret is a sticky subject for some pitchers - Los Angeles Times