ORCHARD PARK, N.Y. (AP) -- Baltimore cornerback Chris McAlister and tight end Todd Heap were both inactive Sunday against the Bills.

McAlister will miss his first game of the season after his troublesome knee kept him out of practice all week. Heap (hamstring) and starting offensive tackle Adam Terry (ankle) both missed their second game.

McAlister was replaced by Corey Ivy.

Quarterback Steve McNair was ruled out earlier in the week because of back and groin problems. Backup Kyle Boller made his second straight start in place of McNair.

The Ravens started four backups on their banged-up offensive line, including rookies Jared Gaither, Ben Grubbs and Marshal Yanda, and six backups overall on offense.

Left tackle Jonathan Ogden returned after missing the last five games because of a foot injury, but was not in the starting lineup.

Bills starting safety Jim Leonhard (calf) and starting cornerback Ashton Youboty (ankle) both missed their second game.

George Wilson, a converted receiver, started at free safety in place of Leonhard, who was starting in place of Ko Simpson (season-ending ankle injury).

Third-string cornerback Jabari Greer, meanwhile, started for Youboty.