No. 1 Palmer Ridge 5, No. 4 Discovery Canyon 0
At Don Breese Stadium: Mackenzie Gouner scored twice, and No. 1 Palmer Ridge (13-0) earned its 12th consecutive shutout.
Kaylyn Smith and Avery Shook each had a goal and an assist for the Bears, a state semifinalist last year.
"We really started to pick things up in the second half," Palmer Ridge coach Nick Odil said. "We just missed chances in the first half, and there are some things we weren’t 100 percent on."
The Bears now face No. 2 Lewis-Palmer in the semifinals.
"That’s a cross-town rivalry here in Monument, and you just throw the records out the window and just go play," Odil said. "It’s going to be a tough game, a hard-fought game, and we’re looking forward to it."
No. 4 Discovery Canyon (5-6-2) only managed two shots on goal.
No. 2 Air Academy 3, No. 3 Sand Creek 0
At Air Academy: Brooke Watson had a goal and an assist, and Sarah Schweiss and Taylor Braden added goals -- all in the second half -- for No. 2 Air Academy (11-2).
Hailey Peterman and Jessica Garrett had assists for the Kadets, who have won seven straight since losing 1-0 at Palmer Ridge on April 10.
No. 3 Sand Creek (6-7) managed just three shots on goal.
No. 2 Lewis-Palmer 6, No. 3 Coronado 0
At Don Breese Stadium: Julia Ayres and Kourtney Guetlein each scored twice to lead No. 2 Lewis-Palmer (9-3-1), which scored five times in the first half.
Lindsey Ryals had a goal and an assist, Erika Balk two assists and Michelle Coleman a goal for the Rangers. It was the third consecutive shutout victory for Lewis-Palmer.
No. 3 Coronado (8-5) was shut out for the third consecutive game.
No. 5 Vista Ridge 11, No. 8 Wasson 0
At Vista Ridge: Haley Polk scored three goals, and Brittney Wells had two goals and three assists to lead No. 5 Vista Ridge (6-7) to its third straight win.
Ashley Noble added four assists, and Alexandra Fox had two goals for the Wolves, who outshot No. 8 Wasson (1-12) 22-1. Ashley Martin chipped in a goal and an assist.
No. 5 Woodland Park 9, No. 8 Harrison 0
At Woodland Park: No. 5 Woodland Park (5-7-1) scored four times in the first half on its way to improving to 3-1-1 in its last five games.
No. 8 Harrison (0-12) was shut out for the ninth consecutive game.