LINCOLN, Neb. — Much of the focus leading into No. 21 Michigan’s visit to Nebraska centered on how Bryce Underwood would perform in his first Big Ten road opener after he struggled two weeks ago at Oklahoma.Never mind his modest passing numbers in Saturday’s 30-27 win. The five-star freshman was more than good enough on a day he and running backs Justice Haynes and Jordan Marshall turned long runs into touchdowns and the defense sacked Dylan Raiola seven times.“He made some excellent throws. He made some excellent runs,” Michigan acting coach Biff Poggi said. “The thing you don’t see is his poise and leadership in the huddle and on the sideline. I’m not exaggerating, there was not a doubt in anyone’s mind on our sideline at any point that we weren’t winning that game. And he was a big part of that.”Underwood was just 12-of-22 passing for 105 yards but scored the Wolverines’ first touchdown on a 37-yard run and extended his team’s last scoring drive with a key third-down pass and a scramble.Haynes rushed for 149 yards, including a 75-yarder where he went untouched late in the first half, and Marshall ran for 80 yards, including a 54-yarder that gave Michigan a 10-point lead entering the fourth quarter.The Wolverines finished with 286 yards on the ground, the most against Nebraska since Oklahoma ran for 312 in 2022.“Just too many big plays to win a football game like that,” Neb …