EVENTS
Monday
Baseball
North Allegheny at Butler, 7 p.m., Pullman Park
Allderdice at Seneca Valley, 4 p.m.
Knoch at Indiana, 4 p.m.
Mars at South Fayette, 4 p.m.
Freeport at Valley, 4 p.m.
New Brighton at North Catholic, 4 p.m., Pullman Park
Karns City at Cranberry, 4:15 p.m.
Union at North Clarion, 4:15 p.m.
A-C Valley at Forest, 4:15 p.m.
Grove City at Slippery Rock, 4 p.m.
Softball
Butler at North Allegheny, 4 p.m.
Hempfield at Seneca Valley, 4 p.m.
Knoch at Central Valley, 4 p.m.
Shaler at Mars, 3:45 p.m.
Freeport at Derry, 4 p.m.
North Catholic at Ellwood City, 4 p.m.
Karns City at Cranberry, 4:15 p.m.
A-C Valley at Forest, 4:15 p.m.
Boys Volleyball
Seneca Valley at Ambridge, 7:30 p.m.
Mars at North Hills, 7 p.m.
Boys Lacrosse
Franklin Regional at Knoch, 4 p.m.
Girls Lacrosse
Shady Side Academy at Butler, 7:30 p.m.
Fox Chapel at Seneca Valley, 7:15 p.m.
Hampton at Mars, 7:15 p.m.
Shaler at Freeport, 5 p.m.
North Catholic at Oakland Catholic, 4 p.m.
Tuesday
Baseball
Yough at Knoch, 1:30 p.m., Pullman Park
Softball
Grove City at Slippery Rock, 4 p.m.
Track and Field
WPIAL Team Championships
Class AAA
Boys
Mars, Chartiers Valley and New Castle at Seneca Valley, 4 p.m.
Girls
Butler, Franklin Regional, Greater Latrobe and West Allegheny at Baldwin, 3 p.m.
Belle Vernon, Chartiers Valley and Hampton at Seneca Valley, 4 p.m.
Regular Season
Clarion at Karns City, 4 p.m.
Cranberry at Union, 4 p.m.
A-C Valley at Redbank Valley, 4 p.m.
Boys Lacrosse
Butler at North Allegheny, 7:30 p.m.
Knoch at North Catholic, 5:30 p.m.
Mars at Greensburg Central, 7:15 p.m.
Freeport at Hampton, 7 p.m.
Girls Lacrosse
Freeport at Knoch, 6 p.m.
Boys Volleyball
Butler at Shaler, 7:30 p.m.
Seneca Valley at Pine-Richland, 7:30 p.m.