Rivers, who suffered a groin injury during Sunday's win at Chicago, did not practice Wednesday, ESPN's Mike Rodak reports. Rivers starts at outside linebacker, though with fellow starter Nigel Bradham returning this week after being suspended in Week 1, the Bills wouldn't be too depleted at linebacker if Rivers has to miss a week. Rookie Preston Brown performed quite capably in Bradham's Week 1 absence, so one would think they'd just move him over to Rivers' spot if needed.