The Owls (39-21) banged out 20 hits on the way to their 25th win in their last 26 games.
Georgia Southern (40-22) meets Alabama on Sunday in an elimination game, with that winner advancing against Kennesaw State on Sunday night. Regional host Florida State, the No. 5 national seed, was ousted by Alabama 6-5 in Saturday’s first game.
Justin McCalvin (5-3) retired nine straight and got the win, while Eric Alonzo (3-4) took the loss.
Kennesaw State ties it at 5 in the sixth, scoring two runs on a throwing error by Georgia Southern reliever Jason Richman
Weather delayed play twice for a total of 3 hours and 7 minutes.