Monday

Baseball

Butler at Moon, 4 p.m.

Seneca Valley at North Hills, 7 p.m.

Knoch at Freeport, 3:45 p.m.

Mars at Valley, 4 p.m.

Cardinal Wuerl North Catholic at St. Joseph, 3:45 p.m.

Redbank Valley at Karns City, 4 p.m.

Rocky Grove at A-C Valley, 4:15 p.m.

Oil City at Grove City, 4 p.m.

Softball

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

Karns City at Moniteau, 4 p.m.

Rocky Grove at A-C Valley, 4:15 p.m.

Boys Lacrosse

Butler at Indiana, 6 p.m.

Allderdice at Knoch, 4 p.m.

Mars at Fox Chapel, 4 p.m.

Canon-McMillan at Cardinal Wuerl North Catholic, 4 p.m.

Girls Lacrosse

Knoch at Yough, 4 p.m.

Pine-Richland at Mars, 7:15 p.m.

Freeport at Fairview, 4:30 p.m.

Boys Tennis

Butler at Neshannock, 3:30 p.m.

Riverside at Seneca Valley, 3:30 p.m.

Knoch at Ellwood City, 3:30 p.m.

Mars at Blackhawk, 3:30 p.m.

Kennedy Catholic at Grove City, 3:30 p.m.

Tuesday

Baseball

North Allegheny at Butler, 7 p.m.

Keystone vs. Karns City, 4 p.m., Kelly Automotive Park, 4 p.m.

Moniteau at Union, 4 p.m.

A-C Valley at Forest Area, 4:15 p.m.

Softball

Butler at North Allegheny, 7 p.m.

Shaler at Seneca Valley, 4 p.m.

Highlands at Mars, 3:45 p.m.

Cardinal Wuerl North Catholic at St. Joseph, 3:30 p.m.

Kittanning at Freeport, 3:30 p.m.

Keystone at Karns City, 4 p.m.

A-C Valley at Forest Area, 4:15 p.m.

Slippery Rock at Hickory, 4 p.m.

Corry at Grove City, 4 p.m.

Track and Field

WPIAL team semifinals

Boys-Girls Class AAA

Knoch, Mt. Lebanon at Butler, 3 p.m.

Mars, West Allegheny at North Allegheny, 3 p.m.

Boys Class AA

Freedom, South Park at Freeport, 3 p.m.

Girls Class AA

Our Lady Sacred Heart, South Park at Freeport, 3 p.m.

Boys Lacrosse

Plum at Freeport, 4 p.m.

Girls Lacrosse

North Hills at Butler, 6 p.m.

Seneca Valley at Pine-Richland, 6 p.m.

Allderdice at Knoch, 4 p.m.

Mars at Vincentian, 4 p.m.

Boys Volleyball

Pine-Richland at Butler, 6 p.m.

North Hills at Seneca Valley, 6 p.m.