Several area high school sports teams will be in action today and Thursday. They include:

• Seneca Valley (17-1) will face Bethel Park (15-5) in a WPIAL Quad A semifinal at 4 p.m. today at North Allegheny High School.• Moniteau (8-7) will travel to Redbank Valley for a District 9 Class AA semifinal at 4:30 p.m. Thursday.• Grove City (18-1) will battle Corry in a District 10 Class AAA semifinal at 6:30 p.m. Thursday at Slippery Rock University's Critchfield Park.

• Karns City (12-4) will host Redbank Valley in a District 9 Class AA semifinal playoff at 4:30 p.m. today.• Moniteau (10-6) will play at Kane in a District 9 Class AA semifinal at 4:30 p.m. today.• Seneca Valley (18-1) will meet Hempfield (17-3) in a WPIAL Quad A semifinal playoff at 6 p.m. Thursday at California (Pa.) University.• Mars (12-8) draws Belle Vernon (17-5) in a WPIAL Class AAA semifinal at 2 p.m. Thursday at Fairhaven Park.

Seneca Valley (15-2) will host Quaker Valley (14-4) in a WPIAL quarterfinal game at 7 p.m. Thursday.Boys LacrosseSeneca Valley (6-6) will tplay at North Allegheny in a Division I quarterfinal playoff contest at 8 p.m. today.