(24) Lewis-Palmer 1, (9) Niwot 0
At Niwot: Adrianna Cook buried a loose ball off a corner kick late in the first half, and clutch saves by goalkeeper Kaity Hovasse made it stand as No. 24 Lewis-Palmer upset No. 9 Niwot in a 4A first-round playoff game.
The Rangers (9-5-2) were the only entry of the five 4A/5A Pikes Peak Athletic Conference playoff qualifiers to advance to the second round.
"We have hard workers on this team; we're not an easy out," L-P coach Ryan Parsons said. "With the 24 seed that we got, that gave them some firepower to show people what we have. I'm super proud of them."
L-P will travel to meet No. 8 Standley Lake (11-4-1) on Saturday.
Hovasse's biggest save came with 16 minutes left when she stopped Cougars leading scorer Anna McCarthy on a breakaway.
(13) Littleton 2, (20) Palmer Ridge 1 (OT)
At LPS Stadium: Sarah Payson scored both goals for 13th-seeded Littleton, including the game-winner four minutes into overtime as the Lions eliminated No. 20 Palmer Ridge from the 4A playoffs.
Lilly Hamilton put Palmer Ridge (9-4-3) on the board with a first-half goal from Emily Nguyen, and the Bears maintained that lead until Payson tied the game with 18 minutes left in regulation.
Kayla Glaser had five saves for Palmer Ridge.
"It was a really hard-fought game," Bears coach Nick Odil said. "We probably won the possession battle, and we had many good chances. We just couldn't finish."
(16) Battle Mountain 3, (17) Sand Creek 2
At Edwards: No. 17 Sand Creek nearly erased a late two-goal deficit but saw its season end in a first-round loss at No. 16 Battle Mountain.
Jaden Davis scored both goals for the Scorpions (11-4-1), who trailed 2-0 at halftime and 3-1 before Davis' second goal with 10 minutes left in regulation.
"We did everything to win the game in the second half," Sand Creek coach Jeremy Tafoya said. "They held on for dear life, and we missed a couple of chances."
(8) Standley Lake 2, (25) Air Academy 1
At NAAC: Two penalty kicks late in the first half boosted No. 8 Standley Lake past No. 25 Air Academy in a first-round playoff game in Arvada.
Zoe Sims set up Capri Dewing in the 25th minute to give the Kadets (7-7-2) a 1-0 lead.
"We had great chances in the last 10 minutes to get the equalizer, but unfortunately that didn't happen," Air Academy coach Espen Hosoien said. "It was a physical and gritty game with several questionable ref decisions."
Kat Blacksten was credited with 10 saves for the Kadets.
(9) CSCS 6, (24) Eagle Ridge Academy 0
At Mountain Lion Stadium: Kait Halverson scored a goal and added two assists, and No. 9 Colorado Springs Christian School also got goals from five other players in a convincing win over No. 24 Eagle Ridge Academy in a 3A first-round playoff game.
Erin Ross, Ellie Wiza, Abby Knedler, Virginia McGrath and McKenna Dorminey also scored for the Lions (13-2), who will hit the road for Saturday's second-round game at No. 8 DSST-Stapleton.
"We were happy to play in the first round versus getting a bye," Lions coach Jason Rollins said. "Playing midweek keeps a rhythm going that's consistent with the regular season, rather than practicing all week and waiting for the first-round winners."
Megan Boucher had five saves in net to record the shutout for CSCS.
(12) Alamosa 3, (21) Atlas Prep 0
At Alamosa: Atlas Prep made a five-game improvement to reach the 3A girls' playoffs in just the second year of the program.
And although the Gryphons (8-5) absorbed a loss to Alamosa (14-2), the stage is set for the future.
"It's a big step from regular season to playoffs, and I'm glad the girls got a chance to see and feel that," Atlas Prep coach Teo Jackson said. "We made a couple of mistakes, and you can't make those against good teams because they capitalize. The intensity was at another level, and the physicality was at another level, so much different from a regular game. I'm sure they'll remember that."
(16) Peak to Peak 8, (17) Florence 0
At Lafayette: Daneca Nelsen, Iris Zhang and Catalina Pezzuti all scored twice as Peak to Peak stormed out to a 6-0 lead in the first half and blanked Florence in a 3A first-round playoff game.
Alayna Mann and Valeria Osuna also scored for the Pumas (8-7-1), who registered the program's 100th victory.
Alexis Dudley had 24 saves for Florence (12-4).
(13) Aspen 11, (20) Air Academy 10
At Aspen: Air Academy (8-9) couldn't quite overcome a two-goal halftime deficit and saw its season end in a road loss.
The Kadets trailed 7-5 at intermission.
(15) Valor Christian 18, (18) Palmer Ridge 4
At Highlands Ranch: Valor Christian (9-7) made history by hosting its first playoff game in program history and advanced to a second-round matchup against three-time and reigning state champ Colorado Academy by throttling Palmer Ridge (8-8).
The Eagles started strong and led 8-3 at halftime.
(5) Cherry Creek 14, (12) Lewis-Palmer 2
At Stutler Bowl: Defending 5A state champion Cherry Creek survived a slow start with a six-goal second period as the Bruins started their title defense with a first-round rout of Lewis-Palmer (9-7).
Cherry Creek led only 2-0 after the first quarter but found its groove with a 6-1 run in the second quarter.