What you're looking at is the helmet of Baltimore Ravens fullback Vonta Leach, who apparently loves ramming his head into things. Teammate Ray Rice tweeted the pic.
For comparison's sake, here's what your average game-worn Baltimore Ravens helmet looks like:
If Vonta Leach had played in the days of leather helmets, he'd have ended each game with a few thin scraps of leather hanging from his ears and a pile of 14 corpses behind him. I have no idea how Vonta Leach is OK.