Peter Warrick, Cincinnati's leading receiver and punt returner, hurt his shoulder in the first half of Sunday's 18-0 loss at Cleveland.
He was hit by cornerback Daylon McCutcheon after a 22-yard reception and fumbled. Warrick was taken to the locker room for precautionary X-rays.
Warrick leads the Bengals with 44 receptions. He's averaging 7.5 yards on his 13 punt returns.
Titans defensive end Jevon Kearse left the game against Pittsburgh in the fourth quarter with a sore back.
Miami's offensive line took another hit when left guard Mark Dixon broke his right leg. Dixon, who started 25 of Miami's last 26 games, was hurt late in the first quarter when the Buffalo Bills stuffed running back Lamar Smith for a 3-yard loss.
Miami center Tim Ruddy and left tackles Brent Smith and Marcus Spriggs already were sidelined.
Carolina defensive tackle Larry Chester broke his left leg in the first quarter against Atlanta. Chester was injured after he and Gillis Wilson combined to sack Chris Chandler with 6:39 left. Chester, who caught Chandler from behind, broke his fibula when Wilson, who hit Chandler from the front, fell on Chester's leg.
San Francisco running back Kevan Barlow dislocated his left shoulder at Indianapolis.
Giants backup cornerback Ralph Brown sustained a concussion on the opening kickoff against Oakland.
Chargers safety Rogers Beckett sustained a concussion and linebacker John Holecek hurt his right knee against Arizona. Cardinals defensive tackle Mario Fatafehi broke his right hand, and receiver Frank Sanders strained his right hamstring.
New Orleans played at New England without left tackle Willie Roaf, who is scheduled to have arthroscopic surgery on his right knee Tuesday that could sideline him for the season.
Roaf, a perennial Pro Bowler, also is scheduled to get a second opinion on his knee Monday from an orthopedic specialist.
"We'll know about the rest of the season then," Saints coach Jim Haslett said.