At home, against No. 23-ranked MI, the Cornhuskers pulled off a 72-52 upset, pushing the team's overall record to 14-7 and 5-3 in Big Ten play.
Wagner, who scored 27 points last Saturday against Michigan State and had reached double figures in all but two games, missed his only shot of the half.
On the offensive end, Nebraska fired on all cylinders with a 55.3-percent performance from the field (26-of-47), including 5-of-11 (45.5 percent) on 3-pointers.
The Huskers would not take their foot off the gas from there, either, pushing their lead to as much as 21 with another 12-3 run to make it 63-42 on a pair of free throws by Palmer with 4:57 to play.
The Huskers played strong defense on the perimeter and forced nine of Michigan's 12 turnovers the first 20 minutes.
MI then went without a field goal for over five minutes while the Cornhuskers reeled off a 10-1 run.
Nebraska (14-7, 5-3), which needed Palmer's 3-pointer to beat last-place IL 64-63 on Monday, led 32-21 at the half and never let MI get closer than 10 points in the last 17 minutes.
After a miserable first half during which MI was never able to establish any semblance of a rhythm, it only continued to get worse in the second half. That game was also in Lincoln.
The Cornhuskers shot over 54 percent from the field while the Wolverines shot 38 percent.
Charles Matthews' 15 points led MI (16-5, 5-3), which lost for just the second time in 11 games. Nebraska made 60 percent of its shots in the first half (15-for-25). Muhammad-Ali Abdur-Rahkman ended the drought with a 3-pointer in the second half, but Anton Gill answered with 3-pointer to give Nebraska a 15-point cushion with 12:23 left. MI had come back to win each of its previous two games, despite the early deficits.
Nebraska shot 55.3 percent (26-for-47) from the field while MI shot 37.5 percent (21-for-56). MI went up 12-10 on a 3-pointer from forward Isaiah Livers with 13:51 to go.
On the season, Nebraska basketball averages 73.5 points, 36.7 rebounds and 14.2 assists per game.
Copeland finished with 13 points and four rebounds while Gill added 10 points on 2-of-3 shooting from behind the arc.