Trevor Siemian had thrown for 2,214 yards and 7 touchdowns this year
Trevor Siemian had thrown for 2,214 yards and seven touchdowns this year. (USATSI)

On Saturday, Northwestern will play Illinois to finish the regular season, needing a win to become bowl-eligible. If the Wildcats are to get that win, though, they'll have to do it without their starting quarterback.

Northwestern coach Pat Fitzgerald announced Trevor Siemian suffered a torn ACL in his team's win over Purdue on Saturday and will miss the rest of the season. Fitzgerald also said that Zach Oliver will start at quarterback against Illinois, but Matt Alviti will play as well.

Both saw time in the Purdue game, with Oliver having the best day. The junior from Baton Rouge, Louisiana, completed 5 of 11 passes for 85 yards, also rushing for another 23 yards and a touchdown.

As for Siemian, this is a terrible way for the senior's career to come to an end. He finishes his college career having passed for 5,931 yards, 27 touchdowns and 24 interceptions.