Palmerton's Martina Herring gave off a lead-off single and then settled down, keeping Catasauqua off of the basepath until the sixth inning.
In between the Lady Bombers used some clutch hits and smart base-running, turning it into a 5-1 victory in the District 11 2A quarterfinal played at Palmerton.
No. 3 seed Palmerton will now take on No. 2 seed Pine Grove on Tuesday night at Blue Mountain High School at 5:30.
"This is the best Martina pitched in a while," said Palmerton head coach Glenn Reimer. "She was on today. "She wasn't feeling good for the last month with a cold and I was worried about her going into today because she's been feeling lousy.
"I think they had one solid rip hit really. That's her personality though. She's a Bulldog and sucks it up and does what she has to do. She's a senior leader and does a great job."
Herring allowed just four hits, struckout five and didn't allow a walk.
The Bombers took a 1-0 lead in the second inning when Sierra Miller reached base on a perfectly executed bunt, moved around to third on another bunt single by Steph Buck and then scored when Buck was caught trying to steal second.
Palmerton widened its lead to 4-0 with three more runs in the fourth. Miller walked, moved around to third when Lauren Campbell was safe at first on an error. Both runners scored on a single by Emily Knauss, who took second on a throw home. Jenna Ritter then doubled Knauss home.
"Emily (Knauus) comes up with two outs and runners on second and third, another senior starter who was with us in districts as a sophomore last time when we beat North Schuylkill," said Reimer, "She comes through with a solid single up the middle to drive in those two runs. That was huge."
The Bombers added an insurance run in the bottom of the sixth when Buck drew a walk, moved around to third on a single by Steph Brinker and scored on an error.
Time and time again, the Lady Bombers picked up that extra base with some smart baserunning.
"We practice that all the time," Reimer said. "Every day we practice running from first to third. Anything they're going to give us, we're going to take."
Catasauqua managed to push a run across in the top of the seventh, but it wasn't enough.
Knauss finished with two base hits for the Bombers.
"Pine Grove is a great team," said Reimer. "Their pitcher throws very hard, just like Herring. I think it should be a great ball game if we play to the best of our ability."
Catasauqua 000 000 1 - 1 4 1
Palmerton 010 301 x - 5 8 2
Kunkle, Ayache (4) and Matos; Herring and Campbell. W - Herring. L - Kunkle.