Steven Sipple: Michigan shows why Nebraska’s next head coach had better have a good answer for improvement in trenchesby:Steven Sipple•11/12/22•steven_sippleRead In AppANN ARBOR, MICHIGAN - NOVEMBER 12: Blake Corum #2 of the Michigan Wolverines runs for a first half touchdown behind Tyreke Johnson #1 of the Nebraska Cornhuskers at Michigan Stadium on November 12, 2022 in Ann Arbor, Michigan. (Photo by Gregory Shamus/Getty Images)Michigan showed Nebraska why its next head coach better have an answer for improvement in trenches