Thomas Sirk was co-MVP of Duke's Pinstripe Bowl victory. (USATSI)

Duke starting quarterback Thomas Sirk has been ruled out indefinitely after suffering an Achilles tendon tear during a conditioning workout. 

According to coach David Cutcliffe, Sirk is scheduled to undergo surgery to repair the injury, in his left leg, Wednesday morning. Sirk already missed the entire 2013 season after rupturing his other Achilles tendon in April of that year. 

The disappointing news comes after Sirk was named co-MVP of Duke's first bowl win since 1961, a 44-41 overtime victory against Indiana in the Pinstripe Bowl. Sirk had 318 yards of total offense and three touchdowns (two rushing, one passing), including a 73-yard touchdown run. 

Sirk can stress a defense with his ability to run, but one question for the rising redshirt senior heading into the offseason was whether the passing game could improve heading into 2016. His completion percentage (58.8) and yards per attempt (6.1) numbers ranked in the bottom half of the ACC, though Sirk and the rest of the team made up for it as one top offensive units in the league. 

With Sirk out, expect Parker Boehme to move into the QB1 role for spring practice. Boehme, set to be a redshirt junior in the fall, was a three-star dual-threat prospect coming out of Jacksonville, Florida, in 2013.