Alex Black had a goal and an assist as the Grove City High School girls soccer team remained unbeaten with a 3-0 win over Slippery Rock Monday.

Jessica Nichols and Christy Allison also scored goals for the Eagles (12-0-2).

Grove City goalkeeper Emma Stapleton recorded her eighth shutout.

Karns City 9, Keystone 1

- Brittni Grenninger scored three goals and had four assists as the Gremlins routed Keystone.

Nikki McElroy added two goals and Julianne Scott, Keirsten Foreback, Ashley Miller and Bittany Angert also scored goals for Karns City (14-4).

Mars junior middle hitter Kelly Berry had a strong match to lead the Planets volleyball team to a 3-1 win over Avonworth by scores of 24-26, 25-12, 25-16 and 26-24.Knoch 3, Ford City 1 -Kari Pizer had 10 service points as the Knights won 22-25, 25-18, 28-26, 25-18.Kariane Stuebgen had 13 kills and Bekah Ogershok had nine for Knoch (10-3), which hosts Hampton Thursday

Mars 20, Pine-Richland 35 (girls); Pine-Richland 26, Mars 32 (boys) -Brittany Zaborowski and Courtney Moran placed first and second to help the Mars girls team improve to 15-1 overall with a win over the Rams Monday.In the boys meet, Cody Kier won with a time of 17 minutes, 39 seconds, but the Planets fell to 12-4 overall.Girls Top 10Brittany Zaborowski (M) 20:53, Courtney Moran (M) 21:13, J. Hubbard (PR) 21:15, Katie Dederer (M) Chloe Pierre (M) A. Mango (PR), J. Pennell (PR), Kaitlin Thompson (M), K. Reinhart (PR), N. Ross (PR)Boys Top 10Cody Kier (M) 17:39, Mark Skriven (PR) 17:58, Dan Pierre (M) 18:02, Bobby Regan (PR), Ryan McCormick (PR) 18:16, Adam Smetana (M) 18:35, James Peters (PR), David Vaccarello (PR) 19:25, Tyler Saklad (PR) 19:28, Mark Stenner (M) 19:47

Christine Clark and Brittany Barnes both won their singles matches, but Mars lost to Sewickley Academy, 3-2 in the opening round of the WPIAL Class AA team playoffs.