Rice was running a stretch play before dropping in the backfield when his leg seemingly gave out. Bernard Pierce entered the game to replace him and would likely assume the role as featured back should Rice miss time.
Fantasy impact: The obvious bit is that Pierce is as must-own as it gets in fantasy. He has tremendous burst and he's arguably one of the top-30 top talents in the NFL. The Ravens are also running out of bodies with Dennis Pitta not coming back from his dislocated hip any time soon and Jacoby Jones out for close to a month with an MCL sprain. Rice will likely have an MRI to check for structural damage. Stay tuned.