Olivia Lackie pitched a complete-game, four-hitter with 10 strikeouts as South Alabama turned back James Madison 4-1 in the Sun Belt Conference tournament quarterfinals on Thursday at Lamson Park in Lafayette, La.

Lackie, the Sun Belt Pitcher of the Year this season, allowed just an unearned run in the fifth inning in going the distance for the 18th time and running her record to 21-6. The third-seeded Jaguars (39-13) have won 14 straight games heading into Friday’s 4 p.m. semifinal game against the winner of No. 2 Marshall and No. 10 Coastal Carolina.

South Alabama scored two runs in each of the first two innings to go up 4-0. Meredith Keel led off the bottom of the first with a double, then later scored on a throwing error.

Mackenzie Brasher — who had reached on the error — stole both second and third, then came home on Sasha Willems’ RBI single to put the Jaguars on top 2-0. After Lackie struck out the side in the top of the second, South Alabama added two more in the bottom of the inning.

After Bailey Welch walked and Emma Kropp was hit by a pitch, Marley Sims bunted both runners over. Keel followed with a sacrifice fly to make it 3-0, then Brasher beat out an infield single to score the Jaguars’ final run.

JMU’s lone run came in the fifth, when Hallie Hall reached on an error, took third on a ground out and then scored on Abbie Campbell’s one-out infield single. After the run scored, Lackie retired eight of nine Dukes to end the game.

Kylah Berry (11-6) took the loss for JMU, which falls to 28-19. Berry allowed four runs (two earned) on five hits in six innings.