Eric Campbell singled home Francisco Martinez with the go-ahead run in the ninth inning Thursday, pushing the Jackson Generals to a 5-4 win over the Biscuits.
Biscuits starter Matt Buschmann gave up one earned run over six innings and left with a 3-2 lead.
Alex Koronis surrendered a game-tying home run to Denny Almonte in the seventh, though the Biscuits reclaimed the lead. Adam Liberatore gave up a tying run in the eighth and the go-ahead run in the ninth.
Ty Morrison hit his first Double-A home run and Ryan Garko hit his first in Double-A since 2004, helping Montgomery take a 3-1 lead after four innings.