Pine tar is shown on the back of the jersey of Boston Red Sox

A.J. Hinch on videos alleging Red Sox reliever of cheating: 'Not something that's crossed my mind

The Pine Tar Game: The Kansas City Royals, the New York Yankees, and Baseball's Most Absurd and Entertaining Controversy eBook : Bondy, Filip: Kindle Store

Why does Justin Turner have a black mark on his jersey? - Quora

Baseball Cards Come to Life!: Interview with longtime Fleer photograher Steve Babineau

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

2016 David Ortiz Game Worn Unwashed Boston Red Sox Jersey from #527, Lot #81984

Justin Turner of the Boston Red Sox displays his pine tar mark on the News Photo - Getty Images

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

Pineda ejected for having pine tar on his neck

Slippery Slope: Pine Tar and Other Obvious Ways Athletes 'Cheat' - ABC News

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