FridayBoys BasketballPIAA Class AAA PlayoffsMars vs. Clearfield, 7 p.m., Clarion High SchoolPIAA Class A PlayoffsCardinal Wuerl North Catholic vs. Union, 6 p.m., GatewayGirls BasketballPIAA Class AA PlayoffsKarns City vs. Carlynton, 6 p.m., Clarion UniversityMoniteau vs. Our Lady Sacred Heart, 6 p.m., Cardinal Wuerl North CatholicWrestlingWPIAL Championships at Penn HillsSwimmingWPIAL Championships at Trees Pool

SaturdayGirls BasketballPIAA Class AAA PlayoffsMars vs. Mercyhurst Prep, 5:30 p.m., Gannon UniversityPIAA Class A PlayoffsCardinal Wuerl North Catholic vs. Cochranton, 3:30 p.m., North AlleghenyWrestlingWPIAL Championships at Penn HillsCollege BaseballSlippery Rock vs. Northwood, 1 p.m., Auburndale, Fla.

SundayCollege BaseballSlippery Rock vs. Saint Joseph's, 2 p.m., Winter Haven, Fla.