Third-string quarterback Drew Stanton suffered a thumb injury in practice Thursday, the extent of which was not immediately known. Stanton is scheduled to be examined by Dr. Kyle Anderson later this afternoon.

In his first real taste of the NFL, Stanton, who spent his rookie season on injured reserve, has looked good in two preseason games. He ran for 26 yards to set up a game-winning field goal in the Lions' exhibition-opening win over the Giants, and last week passed and ran for touchdowns in the fourth quarter of a win over the Bengals. He is competing with Dan Orlovsky for the backup quarterback job behind Jon Kitna.

Stanton said he hurt his thumb following through on a pass when his hand hit a teammate. He fractured the base of his right (throwing) thumb three years ago as a junior at Michigan State.