At Searsport, the host Vikings used a smothering defensive effort to improve to 6-9 while winning their second consecutive home game.
Charlie Spiegel led the Vikings with 20 points while Connor Kneeland added 11. Isiah Runci and Ben Powell each chipped in with 8 points.
Ethan Young led the 6-9 Tigers of East Sullivan with 14 points and Kyle Brooks added nine.
Sumner 11 16 24 38
Searsport 10 24 39 55
JV: Sumner 51-43