The win casts 9-0 L-B into the state playoffs and ends MMC's season, the Eagles hanging up the cleats with a 1-8 record.
The L-B Eagles scored 24 points in the first quarter, and added 21 more in the second to take total command of the game early, as they have much of the season.
MMC scored on a 37-yard field goal by Jordan Boekhout in the second quarter, scored a TD in the third quarter under the continuous clock on a 31-yard TD jaunt by Lukas Nelson, and then added two more TDs in the fourth on a Nelson 75-yard sprint to paydirt, and a 24-yard pass from Justin Henke to Jerad Letsche.
MMC rushed for 326 yards in the game, with Nelson toting it 16 times for 157 yards, Henke carrying 12 times for 87 yards, and Jordan Petersen carrying it 15 times for 67 yards.
Henke was 3-15 passing for 28 yards and a TD, and L-B was 4-9 for 106 yards.
Tucker Petersen led the MMC Eagles on defense with five tackles, while Derek Schlinz and Blaine Dammann each had four. Schlinz also had two fumble recoveries.
"This was without a doubt the best team we have seen all year," said MMC coach Brian Williams. "They are big, strong, and have excellent speed. I was very proud of how well we played and how hard we competed the entire game.
"We'll miss the five seniors off the team and look forward to a large group returning to next year's squad."