First, let's make one thing clear. I'm not defending New York Yankees pitcher Michael Pineda's recent illegal use of pine tar during a game against the Boston Red Sox, where
Why do MLB players have pine tar on their helmets? - Quora
Former Red Sox pitcher says MLB should let pitchers use foreign
Should we care if pitchers use pine tar?
A Yankees Pitcher's Hand Revives Arguments Over Pine Tar - The New
Paul Clemens got pine tar on his jersey, so he had to assume the
Umpire checks for pine tar, 07/02/2017
Why Pine Tar Should Be Legal for MLB Pitchers
Why Pitchers Use Pine Tar
Should we care if pitchers use pine tar?