Will the secondary hold up?
Michigan football allowed New Mexico quarterback Jack Layne to complete 66 percent of his passes. The Lobos had 217 yards passing on 40 attempts. The yards per attempt wasn't anything to worry about, but New Mexico was able to complete a lot of passes underneath.
Last week, John Mateer, the former Washington State quarterback, was nearly perfect in his debut, completing 31 of 38 pass attempts for 392 yards. That's 10.6 yards per pass attempt. His effort also included three touchdowns compared to one interception.
The fact that Underwood was able to avoid turnovers was maybe the most impressive part of his debut. Mateer couldn't do that against an FCS team. Keontez Lewis had nine receptions for 119 yards and two scores. Jaren Kanak, a former linebacker, had five receptions for 90 yards.
It's a fair question to ask if Michigan can hold up on the back end. The Wolverines did against Jeremiah Smith and Ryan Williams last season, and they did it in the bowl game without Mason Graham and Kenneth Grant.
But Mateer is a different kind of quarterback. Jyaire Hill and Zeke Berry are both proven at this point. But if Rod Moore is still out, Michigan will need to get deeper into the depth chart, even at nickel, which can impact corner and safety, and that's where the question lies. Can the 3rd-4th corner hold up?