Lions QB Matthew Stafford's status uncertain after leg injury

Lions quarterback Matthew Stafford is hit by Titans linebacker Akeem Ayers (56) in the first quarter. (US Presswire)

Lions QB Matthew Stafford's status for Detroit's Week 4 game vs. Minnesota is uncertain after a right leg injury forced him from Sunday's 44-41 overtime loss to the Titans.

Stafford said the injury happened during practices leading up to Sunday's loss –- he didn't identify which workout –- and that the injury bothered him throughout the week. Stafford said his pursuit of Titans CB Alterraun Verner after Verner's interception late in the fourth quarter was the final straw.

“I felt [the injury] during a couple of plays,” he said. “I was trying to sit on a heat pack to try and keep it loose and warm. On the play trying to go after [Verner], I felt like I couldn't [run fast]. I felt like if I tried to [run] it would have been a lot worse than it is.

Stafford said he wasn't sure which muscle in his leg was injured, and that he will undergo an MRI for further diagnosis.

The revelation that the injury happened during practice was interesting, because Stafford wasn't listed on the league-mandated injury report at any point during the week.

Stafford remained non-committal when he was asked if he would be able to face the Vikings next week. “I need to look at [the diagnosis],” he said. “I'm not fast enough to pull a muscle generally. We'll see.”

Follow Lions reporter John Kreger on Twitter at @CBSLions and @JohnKreger.