MondayBaseballWPIAL Class AAA PlayoffsMars vs. Chartiers Valley, 4:30 p.m., at Burkett ComplexKnoch vs. Blackhawk, 7 p.m., at Burkett ComplexDistrict 10 PlayoffsGrove City at Strong VincentSoftballWPIAL Class AAA PlayoffsKnoch vs. Thomas Jefferson, 6 p.m., at Canon McMillanWPIAL Class AA PlayoffsFreeport vs. South Park. 5 p.m., at BaldwinWPIAL Class A PlayoffsCardinal Wuerl North Catholic vs. Western Beaver, 2 p.m., at Seneca ValleyDistrict 9 PlayoffsRedbank Valley at Karns City, 4:30 p.m.A-C Valley at Smethport, 4:30 p.m.Boys LacrosseWPIAL Div. 2 PlayoffsMars vs. Moon, 6:15 p.m., at North Allegheny

TuesdayBaseballDistrict 9 PlayoffsA-C Valley at Port Allegany, 4:30 p.m.Boys VolleyballWPIAL playoffsSeneca Valley vs. Penn-Trafford, 7:30 p.m., at BaldwinGirls LacrosseWPIAL Div. 2 PlayoffsMars vs. Bethel Park, 7:45 p.m., at North AlleghenyLegion BaseballValley at MarsEast Butler at KiskiWest Sunbury at Butler CityMeridian at Slippery RockSaxonburg at Center Township