Jeremy Hellickson won his 4th straight decision, going 6 innings to earn the victory.
Hellickson (8-2) yielded one run on three hits and two walks while striking out four. The 20-year-old right hander is 4-0 with 2.01 ERA in his last six starts, limiting opponents to a .234 batting average in that span.
Ryan Owen worked a perfect seventh and Ryan Reid gave up a hit and a walk with three strikeouts in two scoreless frames for his eighth save.
Quinn Stewart, who went 3-for-4 with two runs scored, clubbed a solo homer, his 14th, in the eighth. Matthew Field smacked an RBI double in the second and Cesar Suarez lifted a sacrifice fly in the fifth to help the Catfish (18-14) snap a four-game losing streak.
The series in Augusta runs through Saturday. The Catfish are in 4th place, 1-1/2 games behind division leading Asheville and Charleston, and a game behind 3rd place Augusta.