Why Pine Tar Should Be Legal for MLB Pitchers
Buster Olney: Has baseball's pine tar problem gotten worse? - ESPN - Buster Olney Blog- ESPN
Red Sox Notebook: Pine tar a part of game – Boston Herald
It's a sticky situation': Mariners pitchers weigh in on MLB rule change on foreign substances
Why do baseball players use pine tar?
MLB Reportedly Cracking Down on Pitchers Using Foreign Substances - On Tap Sports Net
Why Pitchers Use Pine Tar
Buster Olney: Has baseball's pine tar problem gotten worse? - ESPN - Buster Olney Blog- ESPN
Trevor Bauer explains what 70 percent of MLB pitchers are doing that's 'a bigger advantage than steroids
This Is Spider Tack: The Men Who Inadvertently Created MLB's Stickiest Problem - WSJ
Count on pitchers continuing to use pine tar - ESPN
Yusei Kikuchi apparently used pine tar on brim of hat - NBC Sports