India, Oct. 4 -- Pittsburgh's unbeaten run continued with a dramatic 35-33 win over Virginia Tech on Friday, but the victory came at a significant cost for the Panthers.

The team learned Saturday that starting quarterback Mason Heintschel will miss the remainder of the season after suffering a knee injury during the win, according to CBS' Matt Zenitz.

An MRI later confirmed that Heintschel had suffered an ACL tear, ruling him out for the rest of the season. The injury leaves the unbeaten Panthers without their starting quarterback as they continue their pursuit of the ACC title.

The injury occurred shortly after halftime when Heintschel scrambled with the ball and was brought down by a pair of Virginia Tech defenders near the sideline....