Not concerned about his age, although he might not be as mobile as he was in the past. But, true, he might just be out of practice. I hope so. Still, I'm expecting a savvy veteran who won't turn the ball over and can lead a few touchdown drives.
The only way the Bills lose this is if they repeatedly turn the ball over themselves. Or if they're sleepwalking and let the Giants hang around in a low-scoring game. Daball might also pull out all the stops: going for it on fourth down all game, fake punts and FGs, trick plays, innovations, all-out blitzing. A desperate opponent is a dangerous one.