WATCH: Harbaugh 'I'm well aware' on record in rivalry games; plus Perry as they move on from MSU

ANN ARBOR, Mich. (AP) - Jim Harbaugh seems to be holding out hope Michigan quarterback Wilton Speight can return with to play this season after injuring his back.

Despite Speight having "some cracks in his vertebrae," Harbaugh said Monday that "I don't know that he'll be out for the year."

Speight was hurt in the first quarter of last month's victory at Purdue. Harbaugh reiterated he expects Speight to be out for multiple weeks.

Harbaugh will give John O'Korn his second straight start when the 17th-ranked Wolverines (4-1, 1-1 Big Ten) play at Indiana (3-2, 0-2) on Saturday. O'Korn threw three interceptions in a 14-10 loss to Michigan State over the weekend in his first start of the season.

On a windy night with a heavy downpour in the second half, the Wolverines didn't seem to adjust their play-calling. Instead of sticking with a running back having success, they continued to attempt to pass with a quarterback struggling in poor conditions. Karan Higdon was consistently gaining yards, 5.4 per attempt, but had just 12 carries. Chris Evans had as many carries, and ran for just 27 yards.

O'Korn completed a little more than half of his passes in the first half before finishing 16 of 35 for 198 yards with three interceptions, which he said were "100 percent my fault," after the game.

"I'm not going to get into questioning the play-calling," Harbaugh said. "That's a very easy thing to do."

Taking care of the football was very hard for Michigan against the Spartans, who recovered two fumbles and forced five turnovers.

"We had a ballgame where stuff happens," Harbaugh said.