SACO — Second-seeded Thornton Academy scored four times in the first inning and held off seventh-ranked Falmouth for an 8-6 victory Thursday in a Western Class A softball quarterfinal.

Bailey Tremblay of the Trojans (15-2) pitched a complete game, and added an RBI and a run.

“They have some big hitters in the middle of their lineup, so it was important for me to mix it up and hit spots,” Tremblay said. “It was what I was trying to do the entire game.”

Falmouth (10-8), which reached the playoffs for the first time since 2007, jumped to a 2-0 advantage in the first inning when Julia Treadwell and Jessica Collins brought in runs with singles.

In the bottom of the inning, the Trojans scored four times and took control.

After a pop out and back-to-back walks, Kaya O’Connor of Thornton came through with a two-run single to make the score 2-2.

Keira Fitzgerald drove in two more runs with a single to center field, and the Trojans gave Tremblay the run support she needed.

“It was kind of a sloppy game on both sides,” Thornton Coach John Provost said. “(Tremblay) was gritty, though. It wasn’t her best performance but she kept us in the game and she finished it.”

The Yachtsmen managed to tie the game in the third inning when Madeline Rouhana came around to score on a single by Treadwell.

Allison Murphy of Falmouth then hit an RBI groundout to make it 4-4.

A run-scoring double by Maizie Lee with two outs in the bottom half broke the tie and gave the Trojans a 5-4 lead going into the fourth inning.

In the top of the fourth, Falmouth’s Rouhana hit a double into the gap in right-center to score Katie Green, tying the game again, this time at 5-5.

A critical error by Falmouth with two outs allowed Libby Pomerleau to come around and score in the bottom half, giving the Trojans what ended up being the winning run.

“We gave ourselves ample opportunity to score in this game,” Provost said, “but I think the key was the sixth and seventh inning, we really clamped down on our defense.”

Thornton added a run in the sixth on an RBI single by Tremblay.

The Yachtsmen pushed one last run across in the seventh, when Rouhana hit a double and scored on an outfield error.

But it was too little too late for Falmouth.

“Our team has a lot of character,” Tremblay said.

“We were down, had some plays with miscommunication, but we stepped up and knew what we had to do.”

The Golden Trojans will be home Saturday to take on sixth-seeded Noble, which advanced by beating Sanford.