Knox (hand) remained sidelined at Thursday's practice, Alaina Getzenberg of ESPN.com reports.
Knox, who is bouncing back from a hand procedure, is considered day-to-day, but back-to-back practice absences cloud his status for Sunday's game against the Jaguars. If he's unable to gain clearance to play this weekend, Tommy Sweeney once again would be in line to head the Bills' tight end corps Week 9.