Tuesday

Baseball

Butler at North Allegheny, 7 p.m.

Central Catholic at Seneca Valley, 4 p.m.

Knoch at Indiana, 4 p.m.

Mars at Woodland Hills, 3:45 p.m.

Burrell at Freeport, 4:15 p.m.

Highlands at North Catholic, 4 p.m.

Clarion at Moniteau, 5:30 p.m.

Clarion-Limestone at Union, 4 p.m.

Softball

Clarion at Moniteau, 4 p.m.

Slippery Rock at Grove City, 4 p.m.

Clarion-Limestone at Union, 4 p.m.

Boys Lacrosse

Mars at Plum, 7:30 p.m.

Freeport at Knoch, 4 p.m.

Shaler at North Catholic, 4:30 p.m.

Girls Lacrosse

Butler at Sewickley Academy, 4:30 p.m.

Seneca Valley at Moon, 6:30 p.m.

Pine-Richland at Freeport, 5 p.m.

Track and Field

Butler at Seneca Valley, 4 p.m.

Mars at Hampton, 4 p.m.

Boys Volleyball

North Hills at Butler, 7:30 p.m.

Bethel Park at Seneca Valley, 7:30 p.m.

Plum at Mars, 7:30 p.m.

Hopewell at North Catholic, 7:15 p.m.

Boys Tennis

WPIAL doubles championships at Fox Chapel

Wednesday

Baseball

Slippery Rock at Oil City, 4 p.m.

Softball

Butler at Pine-Richland, 4 p.m.

Seneca Valley at Norwin, 4:30 p.m.

Burrell at Knoch, 4 p.m.

Fox Chapel at Mars, 3:45 p.m.

Freeport at Greensburg Salem, 4:15 p.m.

Track and Field

Mars at MAC Invitational, Shenango, 2 p.m.

Moniteau at North Clarion, 3:45 p.m.

Redbank Valley at Union/A-C Valley, 4 p.m.

Boys Lacrosse

Central Catholic at Butler, 7 p.m.

Norwin at Seneca Valley, 7:45 p.m.

Girls Lacrosse

Trinity at North Catholic, 4:30 p.m.

Boys Tennis

WPIAL doubles championships at Fox Chapel