Sproles caught a pass from Philip Rivers and was turning to run when he was hit by McClain. The Raiders linebacker led with his shoulder, but the side of his helmet hit Sproles' helmet. Sproles was on the ground for a few minutes before walking off the field.
The extent of Sproles' injury wasn't announced.
Raiders led 21-3 at halftime.
Published at 2:55 PM PST on Dec 5, 2010 | Updated at 3:00 PM PST on Dec 5, 2010