Michigan starting quarterback Wilton Speight left Saturday's 28-10 win over the Purdue Boilermakers with an undisclosed injury.
According to the Detroit Free Press' Nick Baumgardner, Speight went down late in the first quarter after he "was hauled down low by one defender before another came in and hit Speight in the back."
He was reportedly transported to a local hospital to undergo X-rays.
"I think it's soft issue," Michigan coach Jim Harbaugh said, per Aaron McMann of MLive.com. "But we'll find out more."
Speight, a senior, had a solid if unspectacular 2016 campaign, throwing for 2,538 yards, 18 touchdowns and seven interceptions while completing 61.