Playing in a makeup game thanks to Monday's rain out, Jorge Bucardo (1-2) got the win in the first game by giving up just one run on two hits in five innings.
But his performance took a backseat to the Game 2 effort of B.J. Salsbury, who finished off the night with a complete-game, one-hit shutout. The lone hit allowed was an infield dribbler that hugged the first base foul line in the first inning.
Salsbury pitched six no-hit innings in his season debut, but he struggled in his two most recent outings.
The effort Tuesday night came as a relief and confidence booster for the 20-year-old prospect.
"I haven't been pitching good lately," Salsbury said. "In the bullpen before the game I changed a couple of things, and it worked. I just threw a lot of extra pitches in warm-ups."
Salsbury, roughed up for nine earned runs in his past two outings, needed little variety Tuesday night to keep the division's top slugging team in check.
He used mainly fastballs in a seven-inning effort that lasted just 1 hour, 20 minutes and saw him face one batter over the minimum. He retired the last 18 Greenville batters.
"Salsbury was on," manager Dave Machemer said. "His last start, he was sick. In fact, he didn't even come to the ballpark the next three days, so I give him a mulligan on that one. He came back today strong and rested, and it looked like him and (catcher Tommy) Joseph were on the same page."
Bucardo gave up one run on two hits and struck out five in five innings in the seven-inning game for his second strong performance at Lake Olmstead Stadium.
The 20-year-old Nicaraguan fanned six and gave up no earned runs in seven innings in his only other start at home this season.
Neither Salsbury (3-2) nor Bucardo (1-2) received much run support, but they got enough thanks to Dominguez.
The starting third baseman drove in all three runs in the first game with a two-run double in the fourth and a one-run single in the sixth. He added an RBI single in the first inning of Game 2 for the only run the GreenJackets needed.
Augusta improved to 15-11 with the wins, matching Greenville for second place in the South Atlantic League's Southern Division.
Ryan Pressley (0-2) got the loss in the first game, giving up two runs, one earned, on three hits over five innings.
Yeiper Castillo (1-2) dropped the second game with just one run allowed on six hits in six innings.