Bills coach Chan Gailey called Spiller's progress "encouraging." The coach was less optimistic about McGee playing, though he didn't believe the injury to be long term.
McGee aggravated the injury early in practice Wednesday, when he limped off the field and climbed into a cart before being driven away for treatment. He had played as a backup the past two weeks after missing five games while recovering from surgery to repair a nerve problem behind his knee.
Spiller was cautious about his status.
"It's slow progress, but we're right on schedule," he said, noting he was able to burst and cut during his few carries in practice. "My intention is to try to go. But I've got to come in tomorrow and see how it feels."
Copyright 2010 by The Associated Press