It doesn't look that serious, but who knows w/ hamstrings. In the first or second inning (w/ the RBI) he ran out a groundball to first, on his walk back to the bag, he initally went to grab the back of his leg but didn't prob. b/c he didn't want to be taken out (and procedeed to try and stretch it out leading off first (nobody was holding him). The next AB, he fouled a tough inside pitch off, then next swing ran out play to first, still favored his leg, and left the game.
It's prob. more of a day to day thing than a DL stint, but keep watching. No need to pressure the kid to come back b/c the O's wont' do anything anyways.
It does basically kick open the door for Reimold (who was called up today).
^^Thanks to Smoovethug for the sharp sig.