The WPIAL soccer playoff brackets were released Wednesday. All 12 Butler County teams have qualified. Following is the first-round schedule.

Boys

Class AAAA

No. 12 Allderdice (9-6-1) at No. 5 Seneca Valley (10-3-2), 4 p.m., Saturday

No. 9 Butler (12-5) vs. No. 8 Penn-Trafford (11-3-2) at Norwin, 3 p.m., Saturday

Class AAA

No. 10 Blackhawk (9-4-3) at No. 7 Mars (10-4-2), 1 p.m., Saturday

No. 3 Knoch (12-4-2) vs. No. 14 Ambridge (9-9) at Mars, 3 p.m., Saturday

Class AA

No. 8 Freeport (12-5) vs. No. 9 Riverside (10-5-1) at North Allegheny, 3 p.m., Saturday

Class A

No. 1 C.W. North Catholic (16-1) vs. No. 16 Quigley Catholic (6-8-3) at Seneca Valley, 2 p.m., Saturday

Girls

Class AAAA

No. 11 Upper St. Clair (8-5-2) at No. 6 Seneca Valley (12-5), 8 p.m., Monday

No. 10 Butler (10-7) at No. 7 Fox Chapel (12-5-1), 8 p.m., Monday

Class AAA

No. 15 Laurel Highlands (8-7-1) at No. 2 Mars (13-1), 8 p.m., Monday

No. 14 Knoch (11-7) at No. 3 South Park (14-2-1), 8 p.m., Monday

Class AA

Freeport (15-2-1) received a bye and will play Thursday against the winner of Monday’s game between Quaker Valley and Beaver.

Class A

No. 2 C.W. North Catholic (13-4) vs. No. 15 Chartiers-Houston (5-12-1) at Pine-Richland, 6 p.m., Monday

Note: Several teams closed the regular season with a game Wednesday night. Team records and stats do not include Wednesday’s action.