WednesdayBoys BasketballDistrict 9 Class A PlayoffsUnion vs. Elk County Catholic, 7:30 p.m., at Clarion UniversityGirls BasketballWPIAL Class AAA SemifinalTrinity vs. Mars, 8 p.m., at West AlleghenyWPIAL Class A SemifinalCardinal Wuerl North Catholic vs. Cornell, 8 p.m., at North AlleghenyCollege BasketballSlippery Rock (women) at Pitt-Johnstown, 7:30 p.m.Slippery Rock at Pitt-Johnstown, 7:30 p.m.

SaturdayWrestlingButler, Seneca Valley, Knoch, Mars at Individual Section Qualifier, Fox Chapel, 9:30 a.m.SwimmingWPIAL Diving Championships at North Allegheny