PITTSFORD, N.Y. (AP) The Buffalo Bills' offensive line, already down two injured starters, suffered another blow Monday morning when both starting left tackle Jonas Jennings and his replacement were hurt.

Jennings sprained an ankle sprain, and was on crutches after the practice. Head coach Gregg Williams said it was too early to tell how long Jennings would be out, but added that precautionary X-rays were negative.

A short time later, Marcus Price, who had moved in at left tackle, was knocked unconscious and suffered what was diagnosed as a concussion. After Price left the practice, Kris Farris played left tackle.

Williams was emphatic in saying that center Trey Teague would not move back out to play tackle.

Both starting guards, Ruben Brown and Jerry Ostroski, missed the Bills' first preseason game. After that game Friday, Williams indicated that Brown would play in Friday's home game against Minnesota.

During the injury-laden practice, defensive tackle Leif Larsen also was carted off with a strained groin muscle. Missing the workout entirely because of injuries were three rookies - wide receiver Josh Reed (back spasms), linebacker Dominique Stevenson (strained hamstring) and Grant Irons (cut eyelid).

The information contained in the AP News report may not be published, broadcast or redistributed without prior written authority of The Associated Press.