On April 23, 2014 — Already suspected by Red Sox broadcasters of illegally using pine tar during his last start against the team, the Yankees’ Michael Pineda gets caught red-handed this time, as umpire Gerry Davis find the substance on his neck and ejects him in the 2nd inning of his start as the Sox win, 5 – 1. Facing a suspension, Pineda confesses to the violation of the rules after the game, explaining that “my hands get sweaty”.

Source
Baseball Reference April 23