Thursday

Baseball

Seneca Valley at Butler, 5:30 p.m., Pullman Park

Freeport at Highlands, 7 p.m.

Clarion-Limestone at Moniteau, 3:30 p.m.

Slippery Rock at Jamestown, 4 p.m.

Softball

Clarion-Limestone at Moniteau, 4 p.m.

Girls Lacrosse

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

Mars at Mt. Lebanon, 7:30 p.m.

Greensburg Salem at Freeport, 5 p.m.

North Catholic at Shaler, 6:30 p.m.

Boys Lacrosse

Allderdice at Butler, 7 p.m.

North Allegheny at Seneca Valley, 7:30 p.m.

Franklin Regional at North Catholic, 4 p.m.

Track and Field

WPIAL team semifinals

Class 3A Boys

Butler, Connellsville, Franklin Regional at Norwin, 3:30 p.m.

Seneca Valley, New Castle, Penn-Trafford at South Fayette, 2:30 p.m.

Class 2A Boys

Knoch, Riverview, Hopewell at Shenango, 3:30 p.m.

Class 2A Girls

Knoch, Hopewell, Carlynton, Beaver at Shenango, 3:30 p.m.

Slippery Rock at Greenville, 3:30 p.m.

Boys Volleyball

Mars at Latrobe, 7:30 p.m.

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

Friday

Baseball

Butler at Seneca Valley, 4 p.m.

Softball

Baldwin at Butler, 4 p.m.

Seneca Valley at Canon-McMillan, 4:15 p.m.

Track and Field

Butler, Mars, North Catholic at Baldwin Invitational, 12:30 p.m.

Seneca Valley, Mars, Knoch at Pine-Richland Invitational, 1 p.m.

Girls Lacrosse

Shady Side Academy at Knoch, 7:30 p.m.

Boys Volleyball

Shaler at Seneca Valley, 7:15 p.m.

College Baseball

Pitt-Johnstown at Slippery Rock, 1 p.m.

Saturday

Baseball

Butler at Seneca Valley, 2:30 p.m.

St. Marys vs. Moniteau, 10 a.m., UPMC Park, Erie