The History of Pine Tar in Baseball
What the MLB's Foreign-Substance Crackdown Could Mean for Pitchers - The Ringer
A Sticky Situation: Why MLB Should Legalize Pine Tar and Other Sticky Substances That Help Pitchers With Grip – The Flintridge Press
What's sticky about Pine Tar in Major League Baseball? Meet the leagues worst kept secret
The argument to make pine tar and other foreign substances legal for pitchers
Jason Turbow, The Baseball Codes
What we learned from Week 1 of MLB's sticky-stuff crackdown - ESPN
New Blog Topic: YET ANOTHER CHEATING SCANDAL
Questions and answers surrounding MLB's sticky stuff problem
MLB pitchers doctoring baseballs are changing the game - Sports Illustrated