BaseballWPIAL Playoffs Class 5AMars vs. Gateway, 4 p.m., at North AlleghenyClass 4AQuaker Valley vs. Knoch, 4:30 p.m., at Fox ChapelNorth Catholic vs. ElizabethForward, 2 p.m., at Fox ChapelRegular SeasonAmbridge at Karns City, 5:30 p.m.Union at Karns City, 7:30 p.m.Greenville at Slippery Rock, 4 p.m.

SoftballWPIAL PlayoffsClass 4AKnoch vs. Central Valley, 4 p.m., at MarsFreeport vs. Yough, 3 p.m., at NorwinRegular SeasonRedbank Valley at Karns City, 6 p.m.

Boys LacrosseWPIAL Playoffs Class 2AFranklin Regional-Shaler winner at Mars, 8 p.m.Sewickley Academy-Moon winner vs. North Catholic, 8 p.m., at Chartiers Valley

Track and FieldWPIAL Championships at Slippery Rock University

<b>Softball</b>WPIAL Playoffs Class 3ASouthmoreland-Keystone Oaks winner vs. North Catholic, TBARegular SeasonJamestown at Slippery Rock, 4 p.m.<b>Girls Lacrosse</b>WPIAL Playoffs Class 2AAquinas-South Fayette winner vs. Mars, 6 p.m., at Hampton