Robby Price's bloop single brought home Kyeong Kang with the winning run in the bottom of the ninth of the Biscuits' 6-5 victory over the Huntsville Stars on Friday.
Montgomery suffered its second blown save of the season in the top of the ninth to set up its first walk-off victory of the year.
Kang hit a leadoff single and, with Riccio Torrez trying to bunt, Kang advanced to second on a wild pitch.
Torrez did put down a bunt, but the Stars seemingly miscommunicated on their defense. Third baseman Joey Paciorek initially retreated toward the base, but pitcher Frankie De La Cruz didn't move to field the ball. Torrez was safe at first and Kang at third.
Price's blooper barely avoided diving left fielder Brock Kjeldgaard and Kang strolled home from third.
Mayo Acosta knocked in three runs for the Biscuits. Jake Floethe threw five innings and was in position for his first Double-A win, while relievers Braulio Lara and Marquis Fleming threw three no-hit innings. Austin Hubbard (1-0) gave up two runs in the ninth.