CHICAGO (AP) Detroit Lions rookie quarterback Matthew Stafford and receiver Calvin Johnson left during the fourth quarter of Sunday's 48-24 loss to the Chicago Bears because of leg injuries.
The Lions had a third down at the Bears 6 when Stafford twisted his right knee as he was sacked for an 11-yard loss by Adewale Ogunleye.
That forced Detroit to kick a field goal, which cut Chicago's lead to 34-24 with 8:15 left. Daunte Culpepper replaced Stafford on the Lions' next possession, and Stafford got the knee wrapped on the sideline. He will undergo more tests in Detroit.
"If I was feeling a little bit better they would've let me back in," said Stafford, who threw for 296 yards.
Johnson, who had 133 yards receiving, also left the game late with a leg injury, although the nature of the problem wasn't clear.
"I tried loosening my legs up, they got a little tight," he said. "I'll be all right, though."
Linebacker Ernie Sims also aggravated a right shoulder injury and left the game late in the third quarter.
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