Tuesday

Baseball

WPIAL 5A Playoffs

Mars vs. Chartiers Valley, 4 p.m., at North Allegheny

Regular Season

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

Moniteau at Redbank Valley, 4:15 p.m.

Softball

WPIAL 3A Playoffs

North Catholic vs. Mount Pleasant, 5 p.m., at Fox Chapel

Regular Season

Moniteau at Clarion, 4:15 p.m.

Slippery Rock at Sharon, 4 p.m.

Girls Lacrosse

WPIAL 3A Playoffs

Seneca Valley at Bethel Park, 7 p.m.

Boys Volleyball

WPIAL 3A Playoffs

Butler vs. Canon-McMillan, 6 p.m., at Upper St. Clair

WPIAL 2A Playoffs

Mars vs. Seton LaSalle, 6 p.m., at Gateway

Wednesday

Baseball

WPIAL 6A Playoffs

Seneca Valley vs. Hempfield, 5 p.m., at Plum

WPIAL 4A Playoffs

Knoch vs. Uniontown, 4 p.m., at Norwin

Regular Season

Keystone at Karns City, 4 p.m.

Softball

WPIAL 6A Playoffs

Seneca Valley vs. Bethel Park, 7 p.m., at North Allegheny

WPIAL 4A Playoffs

Knoch vs. Montour, 3 p.m., at North Allegheny

Freeport vs. Central Valley, 5 p.m., at Mars

Regular Season

Moniteau at Redbank Valley, 4:30 p.m.

Track and Field

WPIAL Championships at Slippery Rock University