No player shall intentionally discolor or damage the ball by rubbing it with soil, rosin, paraffin, licorice, sand-paper, emery-paper or other foreign substance.
PENALTY: The umpire shall demand the ball and remove the offender from the game. In addition, the offender shall be suspended automatically for 10 games. For rules in regard to a pitcher defacing the ball, see Rules 8.02(a)(2) through (6).
Joe Niekro is found to have a emery board on the mound [Rule 3.02][Rule 8.02(b)]
Pitcher Brendan Donnelly is discovered with pine tar on his glove and is ejected.
Is it dirt? Is it pine tar? Umpires Kenny Rogers to wipe off a substance on his pitching hand during Game 2 of the 2006 World Series.