High schools Baseball Saturday’s results Nonsection Seton LaSalle 2, Knoch 1 Shaler 7, Central Catholic 4 Lacrosse Boys Saturday’s results Nonsection South Fayette 16, Seneca Valley 10 Tennis Boys WPIAL team playoffs Semifinals Monday’s schedule Class 3A Fox Chapel vs. North Allegheny at Sewickley Academy, 3:30 p.m.; Upper St. Clair vs. Gateway at Bethel Park, 3:30 p.m. Class 2A Sewickley Academy vs. South Park at Shady Side Academy, 3:30 p.m.; Quaker Valley vs. North Catholic at North Allegheny, 3:30 p.m. Track WPIAL team championships Tuesday’s schedule Class 3A At West Mifflin Boys Norwin, North Allegheny, Butler, Penn-Trafford, 3 p.m. Girls Norwin, North Allegheny, North Catholic, Mt. Lebanon, 3 p.m. Class 2A At Peters Township Boys Hopewell, Greensburg Central Catholic, Quaker Valley, Ellwood City, 3 p.m. Girls Shenango, Fort Cherry, Quaker Valley, Knoch, 3 p.m. All schedules are subject to change. To report scores or schedule changes, email ptrsports@triblive.com. If Javascript is disabled browser, to place orders please visit the page where our photos are available to purchase.