Lower Merion, which clinched a berth in the state tournament, will visit Central League rival and No. 1 seed Conestoga (22-4) in a district quarterfinal Friday night. The Pioneers downed 17th-seeded Methacton, 45-40, Tuesday.
"We want to keep getting better," Aces coach Gregg Downer said. "We think we can play with most anybody."
The 6-foot-4, 200-pound McFadden, a wing player who has committed to Binghamton, shot 5 for 13 from the field (3 for 5 on threes) and 11 for 16 from the line. He added nine rebounds (two on offense), two assists, and a blocked shot.
McFadden, who drew a first-half charging foul, was a starter on last year's state-championship squad.
"He's going to be leaving here with an unbelievable resumé," Downer said.
With Lower Merion (19-6) ahead by only a point early in the third stanza, McFadden buried a right-wing three-pointer. That was followed by his trey from the top of the arc. His third three, from the right baseline, gave the visitors a 38-28 advantage.
Corey Sherman, with three of his four threes coming in the second quarter, chipped in 12 points; Jule Brown posted nine points; and floor general JaQuan Johnson had six points, three assists, and three steals.
Still alive for one of the district's 10 state-playoff berths, Penn Wood (16-7) will host Methacton (16-9) in a playback game Friday.
Early in the fourth quarter, Johnson scored inside on a feed from McFadden to put the Aces ahead, 46-36. The Patriots, who were hurt by 18 turnovers, never recovered.
"We really got out of character in the second half," Penn Wood coach Clyde Jones said. "Really, I just don't think we were ready to play tonight."
Malik Jackson paced the hosts with 15 points and six boards. Before fouling out with five minutes remaining, Amadou Kaba recorded 11 points and seven rebounds.
Lower Merion 13 16 15 14 – 58
Penn Wood 14 11 11 7 – 43
LM: JaQuan Johnson 6, Corey Sherman 12, Jule Brown 9, Justin McFadden 24, Steve Pendleton 4, Nick Jones 3.
PW: Addison Scott 4, Landen Jenkins 5, Jeff Padilioni 6, Malik Jackson 15, Antonio Ward 2, Amadou Kaba 11.