Jensen Beachy led Perham with 23 points, 6 assists and 3 steals. Charlie Rasmussen (12 points, 7 rebounds, 3 assists, 2 steals), Josh Jeziorski (12 points, 3 rebounds), Carter Cresap (12 points, 6 assists) and Elijah Morris (10 points, 2 assists) were all in double digits.
Perham continued their torrid shooting, hitting 59% (29-49) of their field goal attempts and 53% (10/19) of their three-pointers.
Oak Grove shot 33% (12-36) from the field. They were led by 18 points from Noah Swenson.
Perham (16-1) has now won fifteen straight games. They will host Park Rapids Area on Tuesday night.