Harbaugh labeled McNamara as the Wolverines' starter before preseason camp opened, and the junior has only strengthened his position during the past month. McNamara appeared in four games last season and started one, passing for 425 yards with five touchdowns and no interceptions.
"Constant improvement, he's ratcheted it up, really, in a lot of different areas," Harbaugh said. "The biggest one is consistency of doing his job, also call it a talent of really making everybody else around you better."
Harbaugh also said Monday that Michigan is "99% vaccinated" against COVID-19 entering the season.