Update (3:26pm): It’s a strained left hamstring, his landing leg. That’s bad, Bartolo’s probably headed to the disabled list even if it’s just a minor strain.
Original Post (3:02pm): Bartolo Colon left this afternoon’s game with an apparent leg injury after covering first base in the seventh inning. David Robertson replaced him on the mound. Out of shape pitchers and wet grass don’t mix well. Stay tuned for updates.