Why Pitchers Use Pine Tar

Not everybody is doing it and it does create an unlevel playing field.

A Yankees Pitcher's Hand Revives Arguments Over Pine Tar - The New

How did Yanks let Pineda use pine tar again?

Angels address the sticky situation of illegal substances on the

Red Sox Notebook: Pine tar a part of game – Boston Herald

Using pine is just fine – The Daily Evergreen

Rays Outfielder Makes An Incredible Catch Over His Head

Cheating The Baseball Codes

Yankees' Michael Pineda ejected for using pine tar - The Boston Globe

A Yankees Pitcher's Hand Revives Arguments Over Pine Tar - The New

Should Pine Tar Be Legal for Pitchers?

Why Pitchers Use Pine Tar

Why Trevor Bauer accused the Astros of doctoring baseballs