Chelsea Williams had 26 points, nine rebounds and four steals to lead No. 8 Copiague (14-6) in an upset of previously undefeated and top-seeded Northport (19-1), 53-47, in a Suffolk Class AA quarterfinal at Northport. Williams hit a driving layup along the baseline to give the Eagles a 49-47 lead with 2:22 left, and added four free throws to help seal the win.
Kelly Ann Sullivan added 10 points, Cypher McCloud had eight points and 10 rebounds, and Raven Walker had 10 rebounds. Chrystal Pope had 17 points for the Tigers.
Copiague will play No. 4 Deer Park in the semifinals Monday 7:30 p.m. at Farmingdale State.