In the only WPIAL playoff game that matched two WPIAL champions from last season, reigning Class AA titlist South Park proved it can be a factor in Class AAA, too.

Laurel Lindsay had 13 of her 23 points in the fourth quarter as the Eagles upset defending Class AAA champion Hampton, 63-52, in a Class AAA quarterfinal last night at Fox Chapel.

"This is great for our credibility to beat the defending [Class AAA] champs," Eagles coach Reggie Wells said. "It shows that we belong."

South Park (18-6) made 19 of 22 free-throw attempts, including going 18 for 20 in the fourth quarter when the Eagles outscored the fourth-seeded Talbots, 27-20.

"We haven't been that strong from the free-throw line," Wells said. "But [this] was different. It was just like practice."

Lindsay made six free throws and Nicole Doria seven in the fourth quarter. For the game, Kaitlyn Piscatelli had 15 points and Doria 12. Laurel Hansen had 13 points to lead Hampton (18-5).

• Indiana 52, Chartiers Valley 42: Sophomore reserve Leslie Stapleton had 17 points and Natalie Glinsky 11 to lead the No. 2- seeded Little Indians (21-3), who scored the final seven points en route to a win at North Hills. Lexy Herron had 13 points and Erica Restich 12 to lead the Colts (17-7), who had won 10 of their previous 11.

• New Castle 68, Mount Pleasant 47: Kaylynn Waters and LaShauna Brothers had 19 points each as No. 1 seed New Castle (22-2) took an early lead and never looked back in a win at North Allegheny. Nicole Malara had 15 points for the Vikings (18-6), who lost four of their final eight after a 14-2 start. The Red Hurricanes have won 10 games in a row.

• Oakland Catholic 46, Penn Hills 37: The Eagles (17-7) advanced to the semifinals for the 11th consecutive season with a win at Plum. It was Oakland Catholic's eighth win in a row and 12th in their past 13 games. Colleen Kiss had 20 points to lead Oakland Catholic. Darche Jackson, Erin Wallace and Davida Penn each had 11 points to lead Penn Hills (12-12), which was as close as 38-36 before Oakland Catholic's 8-1 run closed out the contest.

• Mount Alvernia 62, Serra 60: The Eagles fell behind big early, slowly clawed back but came up just short at Keystone Oaks. Tahlar McIntosh had 21 points and Kat Owunna 16 for the defending champion Lions (15-9), who led, 27-11, at the end of the first quarter before being outscored, 49-35, the rest of the way. Taylor Minkus had 18 points for Serra (15-7).

• Quigley 51, Fort Cherry 42: Led by Kayla Taormina's 17 points, the No. 2-seeded Spartans (20-2) won their 15th game in a row at Ambridge. Danielle Spinden had 15 points for the Rangers (18-6), who had won eight of their previous nine.

• Vincentian 51, Clairton 44: Lindsay Primyon had 20 points to lead the Royals (16-8) to a win at Northgate. Alexis Sayles led all scorers with 22 for the Bears (11-10).

• North Catholic 57, Rochester 47: The No. 1-seeded Trojanettes won at Moon. Erin DiSanti had 15 points and Lauren Savulchak 14 for North Catholic (19-5), which has won 19 of its past 21 games. Hayden Kimbrough had 15 points to lead the Vikings (17-7).