BaseballRiverside at Butler, 4 p.m.Seneca Valley at Hampton, 4 p.m.Ambridge at Knoch, 3:45 p.m.Mars at Ford City, 3:45 p.m.Grove City at Slippery Rock, 4:30 p.m.Karns City at Venango Catholic, 4:15 p.m.Union at Moniteau, 4:15 p.m.Redbank Valley at A-CValley, 4:15 p.m.

Girls SoftballFarrell at Slippery Rock, 4 p.m.Venango Catholic at Karns City, 4:15 p.m.A-CValley at Redbank Valley, 4:15 p.m.West Middlesex at Grove City, 4 p.m.

Track and FieldFreeport at Mars, 3:30 p.m.

Boys TennisFranklin at Grove City, 3:30 p.m.WPIAL section doubles

College SoftballSlippery Rock at Ohio Valley, 5 p.m.

<B>Baseball</B>Karns City at Clarion, 4:15 p.m.Union at North Clarion, 4:15 p.m.<B>Girls Softball</B>Butler at North Allegheny, 4 p.m.Seneca Valley at Fox Chapel, 3:30 p.m.Hampton at Knoch, 3:45 p.m.Mars at Kittanning, 4 p.m.Clarion at Karns City, 4:15 p.m.Frereport at Valley, 4 p.m.<B>Boys Tennis</B>Knoch at Highlands, 4 p.m.WPIAL section doubles<B>Track and Field</B>Pine-Richland, North Allegheny at Butler, 3 p.m.Seneca Valley at Knoch, 3:30 p.m.Slippery Rock at Hickory, 3:30 p.m.<B>Girls Lacrosse</B>Seneca Valley at Butler, 6 p.m.<B>Boys Volleyball</B>North Hills at Butler, 6 p.m.Seneca Valley at Fox Chapel, 7:30 p.m.Summit Academy at Avonworth, 6 p.m.<B>College Baseball</B>Slippery Rock at West Liberty, 1 p.m.