Downingtown West will face West Chester Rustin in the league's playoff semifinals at Oxford on Saturday, and Downingtown East will play American Division winner Great Valley.
Also in the Ches-Mont, Great Valley tuned up for the playoffs with a 44-39 win at West Chester Rustin. Danielle Strang gave the Patriots 11 points, and Kelly Sugalski scored seven of her 10 in a 19-7 fourth-quarter rally.
Unionville guard Alison Lewis rebounded a missed Kennett shot in a tie game, dribbled the length of the court, and hit a 15-foot jumper at the buzzer to give the host Indians a dramatic 34-32 victory. Lewis had 17 points and 10 rebounds.
Alie Alkins' layup with 3 seconds left made Sun Valley a 36-34 winner at Oxford.
Bicentennial. Morrisville finished a 16-0 league schedule with a 29-25 win over visiting Jenkintown.
Down by five points entering the second period, the Bulldogs rallied with Michelle Evans' six second-quarter points and Kievanna Lacey's 12-point game.
Delco Christian spotted host Christopher Dock an 18-13 halftime lead before rallying to win, 33-30. Stacey MacArthur saved 12 of her game-high 21 points for the fourth quarter.
Phil-Mont Christian's Jana Goodman, who finished with 17 points and 15 rebounds, made all of her six foul shots in the final minute to pull out a 42-35 win at Plumstead Christian.
Central. Haverford High tuned up for Saturday's league championship game with Upper Darby by beating Lower Merion, 43-34, in the semifinals. Jaclyn Gantz and Julia Gantz scored 10 points each for the Fords.
Catholic. Archbishop Wood got points from 13 players, including six by Alex Heck, and pinned a 46-20 setback on host Conwell-Egan.
Suburban One. Balanced scoring by Cassidy Koenig (16 points), Mary Jean Valeri (11), and Kristina O'Sullivan (10) guided Upper Merion to a 59-39 success at Upper Moreland.North Penn's Lauren Crisler (19) and Steph Knauer (20) combined for 21 points in a 25-7 second-quarter spree that launched the Maidens to a 61-26 win at Hatboro-Horsham.
Del-Val. Academy Park's Brianna Macauley collected 27 points and 15 rebounds while dominating a 58-37 win at Penn Wood. Jordan Matthews chipped in with 13 points and eight assists for the Knights.
Chichester freshman Maddie Thornton hit three three-point baskets in a 40-36 victory over visiting Interboro. Emily Gilhool helped clinch the outcome with 5-for-6 foul shooting in the final period.
Tri-County. West-Mont Christian avenged an earlier overtime loss to Woodlynde with a 42-38 win at home. Sydney Charlton's 13 points and Kylie Stimson's 12 fueled the Wings.
Nonleague. Nicole Pupillo scored all of Perkiomen School's 14 points in the second quarter on her way to a 28-point effort in a 51-36 win at Academy of the New Church. ANC freshman Lucy Raymond scored a season-best 27 points.
Calvary Baptist's Sierra Guenst posted 13 points and eight rebounds, and Kelsey Farnham snagged six steals during a 50-31 win over visiting Imhotep Charter.