Northwestern running back Mike Trumpy is out for the season after tearing the anterior cruciate ligament in his left knee against Illinois Saturday, coach Pat Fitzgerald said Monday.
"It was a non-contact injury and he stuck his foot [incorrectly] on the ground," Fitzgerald said. "I thought we ran the ball pretty well without him. Treyvon Green and Jacob Schmidt and Adonis [Smith] are coming on. So we have guys there that have been involved."
Trumpy was the Wildcats' second leading rusher behind quarterback Kain Colter with 182 yards on 35 carries and a touchdown.
With Trumpy out, Fitzgerald said there are four backs he can use. Fitzgerald listed Schmidt as the starting tailback for Saturday night's game against No. 12 Michigan at Ryan Field, with true freshman Treyvon Green also on the two-deep. But Smith is making progress after suffering a leg injury against Eastern Illinois and Tryris Jones is another good option.
"Trumpy is a little bit down," Schmidt said. "It hurts our team, but as a group we have to pick up the flag and embrace our role and play that much better. We have to have the young guys like Trevyon and Adonis step up."
Trumpy has had bad luck against the Illini, fracturing his right wrist in last season's game at Wrigley Field. This is the second injury this season for Trumpy, after he suffered a concussion in the season opener at Boston College on Sept. 3 and had to sit out the Eastern Illinois game Sept. 10.
But there was good news in terms of injuries on Monday. Quarterback Dan Persa tweaked his right Achilles against Illinois, but Fitzgerald said Persa worked out Monday and was fine. Persa is listed as the starter against Michigan.
Superback Drake Dunsmore said Persa had a couple of setbacks during the preseason, and based on those issues the senior took himself out of the game as a precaution.