Oakland running back Darren McFadden left the field shortly before halftime Sunday because of an ankle injury, the latest setback for the Raiders' top rusher.
X-rays on McFadden were negative during a 42-32 loss to Tampa Bay. Oakland coach Dennis Allen didn't say which ankle was hurt and didn't provide additional information.
Earlier in the game, Raiders defensive tackle Desmond Bryant was taken to a hospital because of a fast heartbeat. No further details were announced about Bryant, in his fourth season out of Harvard.
Green Bay linebacker Clay Matthews, Pittsburgh receiver Antonio Brown and Washington wide receiver Santana Moss were among other players who exited early.
Matthews hurt his hamstring injury after a failed sack and Packers receiver Jordy Nelson injured his ankle.
``We need to get healthy, that's what bye weeks are for,'' Green Bay coach Mike McCarthy said after a 31-17 win over Arizona.
Brown, the Steelers' top receiver, left in the first half of a 24-20 victory over the New York Giants with a banged-up left ankle. Moss sustained a concussion in the fourth quarter of the Redskins' 21-13 loss to Carolina.
The Raiders dealt with several injuries.
McFadden ran for 17 yards on seven carries. He was stopped for no gain on his final try, and it was not certain how he was hurt.
Drafted fourth overall in 2008, McFadden has excelled when he's been healthy. But he missed 19 games in his first four seasons with foot, toe, shoulder, knee and hamstring injuries.
Raiders backup running back Mike Goodson limped away after injuring his right ankle in the fourth quarter. Safety Matt Giordano hurt his hamstring when he missed a tackle on Doug Martin's 67-yard touchdown run.
Seattle linebacker K.J. Wright left in the first quarter of the Seahawks' 30-20 win over the Vikings with a concussion and did not return.