Ellie Colbeck (19 points, 6 assists), Ainsley Hansen (12 points, 11 rebounds, 2 assists), Hannah Polejewski (12 points, 7 rebounds), Tori Ratz (8 points, 2 assists) and Karley Braeger (7 rebounds) all contributed to the win for the Otters.
The Otters won despite having 13 more turnovers than the Sabres.
Sartell was led by Brenna McClure and Avery Templin with 11 points each.
Fergus Falls (12-4) will host Moorhead on Tuesday night.