After Biscuits starter Albert Suarez left with an injury, Marquis Fleming threw 3 1/3 shutout innings to help Montgomery take a 5-4 victory over the Jackson Generals in the first game of Friday's doubleheader.
Suarez lasted just 1 1/3 innings and threw 32 pitches before suffering an undisclosed injury. He gave up four hits and one run.
Fleming allowed one hit and two walks.
In the seventh, and final, inning, the Biscuits threw out the potential tying run at home to hold on.
With one out, John Hicks hit an RBI double and pinch-runner Abraham Almonte tried to score from first. Center fielder Kevin Kiermaier threw to shortstop Shawn O'Malley, who threw to catcher Mark Thomas for the out.
Hicks went to third on the play and watched Juan Sandoval induce a game-ending groundout.
Montgomery led 5-0 in the middle of the second inning.
In the first, Cameron Seitzer singled home O'Malley. In a four-run second, Robi Estrada and Mikie Mahtook each hit two-run doubles.
The Generals, after scoring off Suarez, added two runs in the sixth against Braulio Lara. A walk and double led to consecutive run-scoring groundouts.