MondayBaseballNorth Allegheny at Butler, 7 p.m.Pine-Richland at Seneca Valley, 4 p.m.Knoch at Greensburg Salem, 4 p.m.Deer Lakes at Freeport, 4 p.m.Freedom vs. Cardinal Wuerl North Catholic, 4 p.m., Kelly Automotive ParkKarns City at Union, 4 p.m.Slippery Rock at Grove City, 4 p.m.Girls SoftballPenn Hills at Butler, 4 p.m.Mars at Armstrong, 3:45 p.m.Freeport at West Shamokin, 4 p.m.Karns City at Keystone, 4 p.m.Girls LacrosseButler at North Allegheny, 7:30 p.m.Vincentian at Mars, 7:15 p.m.Knoch at Plum, 7 p.m.Greater Latrobe at FreeportCardinal Wuerl North Catholic at IndianaBoys VolleyballNorth Hills at Cardinal Wuerl North Catholic, 7:30 p.m.

TuesdayBaseballKarns City at Cranberry, 4:15 p.m.A-C Valley at East Forest, 4:15 p.m.Union at North Clarion, 4:15 p.m.Girls SoftballShaler at Butler, 4 p.m.Seneca Valley at North Allegheny, 6 p.m.Indiana at Knoch, 4 p.m.Mars at West Allegheny, 3:45 p.m.Freeport at Burrell, 7 p.m.Springdale at Cardinal Wuerl North Catholic, 3:45 p.m.Karns City at Cranberry, 4:15 p.m.A-C Valley at East Forest, 4:15 p.m.Conneaut (Ohio) at Slippery Rock, 4 p.m.West Middlesex at Grove City, 4 p.m.Track and FieldWPIAL Team SemifinalsClass AAA BoysMars, Penn Hills, Chartiers Valley, Beaver at North Allegheny, 3 p.m.Latrobe, New Castle, Kiski Area at Seneca Valley, 3 p.m.Class AA BoysQuaker Valley, Southmoreland at Freeport, 3 p.m.Class AAA GirlsButler, Latrobe, West Allegheny, Kiski Area at Seneca Valley (host site only), 3 p.m.Class AA GirlsQuaker Valley, Southmoreland, California at Freeport, 3 p.m.Regular SeasonSlippery Rock at Hickory, 3:30 p.m.Boys LacrosseButler at Sewickley Academy, 4:30 p.m.North Allegheny at Seneca ValleyKnoch at Hampton, 7 p.m.Mars at Indiana, 7:30 p.m.Freeport at Cardinal Wuerl North CatholicBoys VolleyballButler at North Allegheny, 7:30 p.m.Seneca Valley at Shaler, 6 p.m.Boys TennisGrove City at Greenville, 3:30 p.m.