After a 1-2 start, the Warhorses have won six of its last seven games, including the last four in a row.
Barnwell High's last triumph came in a 3-1 win over region rival Silver Bluff High March 30 in Barnwell.
The Warhorses shaped into top form offensively with a 22-13 edge in shots for the game.
Zach Zissette led the offensive with two goals for the game. Zissette's first goal came 12 minutes into the contest off an assist from Jacob Oswald.