SATURDAYBaseballFreeport at Springdale, 11 a.m.

Track and FieldButler at Tri-State Invitational, West Mifflin, 8:30 a.m.

Boys TennisDistrict 10 singles qualifier at Pennbriar, Erie, 8:30 a.m.

Boys LacrosseSeneca Valley at Orchard Lake St. Mary (Mich), 4 p.m.

College Track and FieldSlippery Rock at Lock Haven Invitational

SundayBoys LacrosseSeneca Valley at Toledo (Ohio) St. Johns, noon

MONDAYBaseballAmbridge at Butler, 7 p.m.Blackhawk vs. Knoch, 4 p.m., Pullman ParkSeneca Valley at Pine-Richland, 4 p.m.Highlands at Mars, 3:45 p.m.Slippery Rock at Sharon, 4 p.m.Freeport at West Shamokin, 4 p.m.Commodore Perry at Grove City, 4 p.m.Summit Academy at Ellwood City, 4 p.m.

Girls SoftballButler at North Allegheny, 4 p.m.Pine-Richland at Seneca Valley, 4 p.m.Ford City at Mars, 3:45 p.m.Leechburg at Slippery Rock, 4:15 p.m.

Track and FieldKnoch, Montour at Seneca Valley, 3:30 p.m.

Boys LacrosseCentral Catholic at Butler, 6 p.m.

Girls LacrosseKnoch at Chartiers Valley, 7 p.m.

Boys TennisSeneca Valley at Butler, 3:30 p.m.Knoch at Hampton, 3:30 p.m.Mars at Hopewell, 3:30 p.m.Grove City at Kennedy Catholic, 3:30 p.m.

Boys VolleyballSummit Academy at Deer Lakes, 6 p.m.