Saturday,/b>FootballDistrict 10 PlayoffsClass 3ASlippery Rock vs. Mercyhurst Prep, 7 p.m., at General McLaneRegular SeasonAvella at Summit Academy, 12:30 p.m.College FootballSlippery Rock at Clarion, noonGrove City at Geneva, 7 p.m.Cross CountryDistrict 10 championship at Buhl Park, 9 a.m.Boys SoccerWPIAL PlayoffsClass AAAASeneca Valley vs. Upper St. Clair, 1 p.m., at MarsClass AAAMars vs. Thomas Jefferson, 3 p.m., at BaldwinClass ACardinal Wuerl North Catholic vs. Seton-LaSalle, 2 p.m., at West AlleghenyGirls SoccerWPIAL PlayoffsClass AAFreeport vs. Waynesburg, 4 p.m., at Elizabeth ForwardDistrict 10 PlayoffsSlippery Rock vs. Hickory, noon, at Grove CityGrove City vs. Conneaut, 2 p.m., at Meadville