Kaden Perry scored 15 points as the Tigers qualified for the bi-district tournament by winning a play-in game at Olympia High.
Brendan Beal added 13 as the Tigers (14-7) kept their season alive with a third straight win.
Battle Ground travels to face Curtis (16-4) of University Place in a first-round game Thursday.
“We’ve got some momentum and we’re playing with some confidence heading into a tough matchup,” said Tigers coach Manny Melo.
Battle Ground led 36-24 at halftime and gradually pulled away from Decatur (9-13).
“We knew they were going to be pretty hectic on defense,” Melo said. “They played us tough all night. We just executed down the stretch to pull away.”
BATTLE GROUND 67, DECATUR 48
DECATUR — Daniel Hylton 2, Isaiah Daughtry 7, Kevin Robello 17, Gabriel Martin 5, Shamaun Guiden, Jacob Graham 3, Connor Rees 7, Tarai Williams, Lamarron Johnson 6, London Jennings, Nolan Gilmore, Ousmane Toure. Totals 15 (5) 13-17 48.
BATTLE GROUND — Jaiden Linville 0, KeAndre Hunter-Holliday 6, Vincent McCormic 12, Colin Barton 7, Nathan Millspaugh 7, Brendan Beall 13, Kaden Perry 15, Lukas Karlsson 2, David Reed 5. Totals 26 (4) 11-17 67.
Decatur 9 15 9 15–48
Battle Ground 16 20 12 19–67
