ThursdayBaseballSeneca Valley at Montour, 7 p.m.Knoch at Kiski Area, 4:30 p.m.SoftballSeneca Valley at Blackhawk, 4 p.m.Grove City at Slippery Rock, 4:15 p.m.Track and FieldWPIAL qualifier at Pine-Richland, 2 p.m.Mercer County Invitational at Slippery Rock, 3 p.m.Union at Redbank Valley InvitationalBoys VolleyballSeneca Valley at Butler, 6 p.m.Girls LacrosseYough at Knoch, 6:30 p.m.Mars at Chartiers Valley, 7 p.m.Indiana at Freeport, 5 p.m.Legion BaseballCranberry at East ButlerButler City at Center TownshipMars at Meridian

FridayBaseballBrockway at Karns City, 4 p.m.Slippery Rock at Hickory, 4:15 p.m.SoftballBrockway at Karns CityGirls LacrosseShaler at Mars, 7:15 p.m.

SaturdaySoftballSlippery Rock at Shenango, 4 p.m.