Gragg may have suffered a serious knee injury during Friday's preseason loss to Washington, BuffaloBills.com reports. "Yeah both of them it looks like ACLs, which is a real shame," said coach Rex Ryan after the game in reference to Gragg and cornerback Jonathan Dowling.

We'll wait for the actual medical results to come back over the weekend, but Gragg had a good shot at landing a roster spot and even seemed to be coming into his own in what will be his fourth season.