The Buies Creek Astros topped the host Salem Red Sox 7-6 in 10 innings on Thursday night on an RBI double by Yordan Alvarez in the extra frame.
Stephen Wrenn scored the deciding run after leading off the top of the 10th with a single.
Salem threatened in the bottom of the 10th with runners on first and second, but a fly out ended the game.
Alvarez had four hits and drove in four runs. Wrenn doubled among four hits and scored four times.
Sean Stutzman (1-1) got the win with two innings of scoreless, two-hit relief.
Daniel McGrath (2-8) took the loss.
Buies Creek (31-15) had an eight-game lead in the second half standings in the Carolina League’s Southern Division going into a home series against the Down East Wood Ducks on Friday at 7 p.m.