Monday

Baseball

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

Hampton at Knoch, 3:30 p.m., Pullman Park

Mars at Shaler, 4 p.m.

Kiski Area at North Catholic, 3:30 p.m.

Karns City at Clarion, 4:30 p.m.

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

Grove City at Slippery Rock, 4 p.m.

Softball

Canon-McMillan at Butler, 4 p.m.

Mt. Lebanon at Seneca Valley, 6 p.m.

Knoch at Indiana, 4 p.m.

Mars at West Allegheny, 4 p.m.

Freeport at Valley, 4 p.m.

North Catholic at Blackhawk, 4 p.m.

Karns City at Clarion, 4:15 p.m.

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

Boys Tennis

WPIAL 3A Playoffs

Mars at Upper St. Clair, 3:30 p.m.

Girls Lacrosse

Fox Chapel at Seneca Valley, 7:15 p.m.

Pine-Richland at Freeport, 5 p.m.

Boys Volleyball

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

Tuesday

Baseball

Butler at Seneca Valley, 4 p.m.

Knoch at Hampton, 4 p.m.

Shaler at Mars, 3:45 p.m.

Eden Christian at Freeport, 4:15 p.m.

North Catholic at Kiski Area, 3 p.m.

Karns City at Cranberry, 4 p.m.

Moniteau at Forest Area, 4 p.m.

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

Softball

Karns City at Cranberry, 4 p.m.

Moniteau at Forest Area, 4 p.m.

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

Franklin at Slippery Rock, 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.

Girls Lacrosse

South Fayette at Knoch, 6 p.m.

Trinity at Mars, 6 p.m.

North Catholic at Aquinas Academy, 3:45 p.m.

Boys Lacrosse

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

Seneca Valley at Shady Side Academy, 6:30 p.m.

Boys Volleyball

Seneca Valley at North Hills, 7 p.m.

Deer Lakes at Mars, 7:15 p.m.

College Baseball

Walsh at Slippery Rock, 4 p.m.

Wednesday

Baseball

Slippery Rock at Franklin, 4 p.m.

Softball

Hempfield at Seneca Valley, 4 p.m.

Shady Side Academy at Knoch, 4 p.m.

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

Highlands at Freeport, 4:15 p.m.

Beaver at North Catholic, 4 p.m.

Track and Field

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

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

Girls Lacrosse

Knoch at Butler, 7 p.m.

Boys Lacrosse

Winchester Thurston at Knoch, 6 p.m.

Mars at Shaler, 7:15 p.m.

Quaker Valley at Freeport, 4 p.m,.

North Catholic at Sewickley Academy, 4:30 p.m.

Boys Volleyball

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

College Baseball

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

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.

Boys Volleyball

Mars at Latrobe, 7:30 p.m.

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

Friday

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

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