Donaldson pledges to release 'entire catalog' of pitchers cheating

Minnesota Twins third baseman Josh Donaldson is seemingly ready to help Major League Baseball uncover which pitchers are using foreign substances.

In a Twitter discussion with Oakland Athletics broadcaster Dallas Braden, Donaldson offered a suggestion to pitchers who choose to use illegal substances to assist with grip: Don't.

After Braden, a former pitcher himself, discussed the differences between using pine tar, rosin, and sunscreen, Donaldson revealed he has "an entire catalog of video of these guys cheating."

Donaldson's comments come in the wake of veteran umpire Joe West confiscating St. Louis Cardinals reliever Giovanny Gallegos' hat during the club's game on Wednesday.

Cardinals manager Mike Shildt was livid after the contest, calling pitchers using foreign substances "baseball's dirty little secret." To Shildt's knowledge, West entirely initiated the check on Gallegos' cap and not the opposing Chicago White Sox.

Donaldson began his MLB career with the Athletics. The former MVP and three-time All-Star is hitting .236/.338/.415 with five homers over 37 games.