McManus had 24 points, five steals, and four assists in the West Michigan Conference-Rivers contest.
It was a tight contest through the first half as the Norsemen held a slight edge, 12-8, at the end of the first quarter and 21-14 at halftime.
In the second half, the Norsemen started to pull away leading and led 44-24 by the end of the third quarter.
“A close game early as Ravenna did a nice job of going inside to their two bigs,” NM coach Chuck Rypstra said. “They got us in some foul trouble and we were having a tough time with their zone. In the second half, we found a few gaps and were able to extend the lead, but Ravenna turned up the pressure and cut a 20-point lead down to 13.”
After a timeout, NM got back on track and scored some easy buckets.
Joining McManus in double figures was James Young with 12 points, four rebounds and four assists. Jaxon Lisinski tallied 11 points. Carsen Moat chipped in six rebounds.
“I was really proud of how we played as we got some difficult news that one of our starters is going to have season-ending surgery on his knee,” Rypstra said. “We all picked it up for him and got a great Friday night home victory”.
The Bulldogs were led by Wyatt Young with eight points. Carter Schullo added seven points. Drew Mabrito and Caleb Forsythe had six apiece.
North Muskegon (9-2, 4-2) travels to Muskegon Heights on Monday.
Ravenna (3-7, 2-3) travels to Holton on Monday.