At Freeland, Ryan Sones hit six 3-pointers and scored 30 points to lead No. 4 MMI Prep in a District 2-11 subregional quarterfinal.
Nick Pantages had 19 points for the Preppers.
Jacob Lewis scored 34 points for Lehigh Christian.
MMI Prep will play Notre Dame-East Stroudsburg in the semifinals on Wednesday. Notre Dame had a bye in the quarterfinals.