ThursdayBoys BasketballWPIAL Class 3A PlayoffsCardinal Wuerl North Catholic vs. Riverside, 8 p.m., Sewickley AcademyDistrict 10 Class 4A PlayoffsGrove City vs. Farrell, 7:30 p.m., at Slippery Rock UniversityDistrict 9 PlayoffsKarns City vs. Moniteau, 6 p.m., Clarion UniversityGirls BasketballWPIAL Class 4A PlayoffsCardinal Wuerl North Catholic vs. Central Valley, 6:30 p.m., Sewickley AcademyFreeport vs. Blackhawk, 6:30 p.m., at North AlleghenyHockeyButler at Canon-McMillan, 9:20 p.m.Seneca Valley at Bethel Park, 9 p.m.Greensburg Salem vs. Freeport, 9 p.m., Belmont Arena

FridayBoys BasketballWPIAL Class 5A PlayoffsMars vs. Laurel Highlands, 8 p.m., at Canon McMillanGirls BasketballDistrict 9 PlayoffsKarns City vs. Moniteau, 7:30 p.m., at Clarion UniversityWrestlingSlippery Rock, Grove City in District 10 championships at SharonSwimmingWPIAL Class AA Diving Championships at Moon