(AP Photo/Mark Zaleski, File)

NASHVILLE, Tenn. (AP) The Tennessee Titans still don't know who will start at quarterback Sunday against the Jacksonville Jaguars.

Marcus Mariota was limited all week with an arm injury and is questionable for the second straight game. Blaine Gabbert started in place of Mariota in Tennessee's 20-17 victory over the Houston Texans .

"I would say it's pretty much the same as it was yesterday," Titans coach Mike Vrabel said Friday. "It's probably going to take the next 24 hours to make a decision, but it's pretty much the same as it's been since Wednesday with a little bit of improvement from last week."

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