Michigan QB battle: Strengths, weaknesses of contenders entering spring ball

The Michigan Wolverines will spend spring ball sorting out the pecking order at quarterback heading into fall camp, which is likely the most consequential position battle on the roster this year. It will be an uphill battle to defend the College Football Playoff National Championship, especially with a 12-team field starting this year, but the quarterback spot could go a long way in determining the ceiling of this group.