At Jonesport, the Tigers of East Sullivan outscored the Royalettes 17-6 in the third quarter en route to the victory.
Genesis DiCarlo paced the winners with 13 points and Kiandra Barnes added seven.
Morgan Merchant scored 13 points to lead the Royalettes and Kali Alley chipped in with eight.
Sumner 11 16 33 36
Jonesport 6 17 23 35