What Is Pine Tar And Why Is It Illegal In Baseball?

Ejected Rays Reliever Sparks Controversy Around Pine Tar and Baseball's Unwritten Rules

Why is the stitching on a baseball red? - Quora

In Major League Baseball, why does it matter if you have pine tar too far down your bat? - Quora

The History of Pine Tar in Baseball

Chris Archer responds to Reds broadcaster's pine tar allegations

The 40th Anniversary of the Pine Tar Game - Baseball Rules Academy

Pine tar - Alchetron, The Free Social Encyclopedia

July 24, 1983: The Pine Tar Game – Society for American Baseball Research

MLB cracking down on pitchers using foreign substances

Why is the stitching on a baseball red? - Quora

Chris Welsh says Chris Archer used pine tar on jersey for some pitches