Jennings doubled with one out off reliever Clayton Tanner, advanced on a walk and stole third with two outs. He scored on a passed ball by Nestor Rojas.
The Catfish (22-12), who totaled just four hits, took a 2-0 lead on Matthew Fields' second-inning RBI double and Ryan Royster's fourth-inning RBI single.
Columbus starter Wilton Noel faced the minimum over five innings, the first 13 batters before yielding a one-out single to Matthew Weston in the fifth. He concluded his outing by inducing Henry Gutierrez to ground out into a double play to end the frame. He fanned two and did not walk a batter.
Ryan Owen (3-2) picked up the win, despite giving up two runs on three hits and a walk over three innings.
It's only Augusta's 8th loss of the season, and the 4th to the Catfish.