Two Ravens who suffered injuries on Sunday against the Patriots, TE Todd Heap and S Tom Zbikowski, both missed practice today.
Heap (neck) was out on the field during practice, but he did not have his helmet with him and did not take part in any drills. Zbikowski (foot) was absent during the media portion of practice.
Head coach John Harbaugh said that both players have a chance to play this week.
"It truly is going to be day-to-day," Harbaugh said. "Zibby has got a shot. He's got a heel situation. Todd has a shot. I think Todd will be there, but you never know what can come up."
For yet another week, OT Jared Gaither (back), LB Tavares Gooden (shoulder) and WR Donte' Stallworth (foot) have been ruled out for Sunday's game.
A host of Ravens were limited today: LB Jarret Johnson (back), DE Paul Kruger (knee), WR Derrick Mason (ankle/finger), S Haruki Nakamura (back), RB Ray Rice (ankle), WR Marcus Smith (back) and CB Josh Wilson (thigh).
LB Edgar Jones (thigh) had a full practice today.
For the Bills, starting CB Terrence McGee (back) and RT Cornell Green (knee) did not practice today, while Buffalo's starting NT Kyle Williams (ankle) was limited.