On May 3, 2012 — The great Mariano Rivera, baseball’s all-time save leader, suffers a torn ligament in his right knee while shagging fly balls during batting practice before the Yankees’ game with the Royals. He is carted off the field, and at 42, the injury appears to be career-ending, but he will be back to pitch a final season in 2013.
Source:
Baseball Reference May 3