GREEN BAY, Wis. -- Daunte Culpepper left with a right hamstring injury Sunday during Detroit's first possession of the third quarter of the 26-0 loss to the Green Bay Packers after coming up limping on a 5-yard scramble.
Culpepper avoided pressure and ran toward the sideline, but began to limp just before he went out of bounds. He was not hit on the play.
Culpepper wasn't having a good day even before the injury, going 6 of 14 for 48 yards, an interception and two sacks.
"If I had continued to run, I might have severely pulled it. It's a tweak right now and we'll see how it feels tomorrow and the next day," he said. "I don't know if I didn't probably warm up coming out of the halftime or whatever, but those things happen sometimes. We're going to treat it, strengthen it and see how it feels in a few days."
Rookie No. 1 draft pick Matthew Stafford, who hurt his knee two weeks ago against Chicago, was the emergency quarterback Sunday.
Schwartz said after the game if Stanton also had been injured, Stafford wouldn't have come in and he would have elected to send Culpepper back in a shotgun formation to help limit his movements with the ailing hamstring.
"It never got to that point," Schwartz said.
Schwartz also declined to say whether Stafford might be available after Detroit's upcoming bye week when the Lions play the Rams on Nov. 1.
"I don't think I've ever put a timetable on when he's coming back," he said.
Information from The Associated Press contributed to this report.