With the loss, the Panthers dropped to 12-5.
Collingswood had slipped into the semifinals with a one-set victory over Cedar Creek.
The third-seeded Panthers defeated the No. 6 Pirates, 3-2, picking up wins at second and third singles, and second doubles, according to nj.com.
Samantha Smith downed Jessica Danks, 6-4, 6-4 at second doubles, and Daria Parkinson defeated Cristina Pirri, 6-0, 6-2.
Danielle Downing and Amy Manti gave Collingswood its third win, defeating Carina Hawryluk and Ella Laverde, 6-4, 6-0.
The first doubles team of Cat Maienza and Maleeya Thompson pushed their opponents to the third set before falling to Emilee Roesch and Casey Thomas, 6-2, 4-6, 6-1.
First singles player Jen Cotton dropped a 6-2, 6-4 decision to Mikila Stefanski.Football
Joe Diaco rushed for four touchdowns to lead the West Deptford High School football team to a 34-7 win over Collingswood, according to nj.com.
Diaco put a touchdown on the board in each of the first two quarters, as the matchup between previously undefeated teams was tight at halftime. He scored on runs of 5 and 20 yards to give the Eagles a 13-0 halftime lead.
He scored twice in the third as West Deptford began to pull away from the Panthers. He rushed the ball in from 19 and 15 yards out, respectively.
Gerald Owens rounded out the scoring for the Eagles with a 2-yard touchdown run in the fourth quarter.
Collingswood's lone score came in the third quarter, on a 10-yard run by John Deaner.
West Deptford improved to 4-0, and hosts Sterling on Friday, 7 p.m.
Collingswood fell to 3-1, and looks to rebound when it hosts Haddon Heights on Friday, 7 p.m.