Why Pitchers Use Pine Tar

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

Trevor Bauer explains what 70 percent of MLB pitchers are doing

Why Do Baseball Players Use Pine Tar? Here's the Reason

In wake of Michael Pineda ejection, MLB should legalize pine tar

Baseball's Sticky Secrets

Why It Is Still a Big Deal That Pitchers Use Pine Tar

This is just as bad as what Pineda did(pine tar) - Blowout

A gripping saga: 11 tales of pitchers using spitters, sandpaper

Yanks' Pineda Ejected After Pine Tar Is Spotted - The New York Times

MLB cracking down on pitchers using foreign substances

Reds' Sonny Gray finds creative way to remove pine tar from hand

Absolutely I'm All for It': MLB's Stars Debate Pitchers Using