The top-seeded Winged Lions (17-7), who are ranked ninth in the state, meet the fourth-seeded Pioneers (5-18) in a 7:30 p.m. contest at Pottstown High School's Strom Gymnasium.
In the first game of the doubleheader, Lower Moreland takes on Devon Prep at 6 p.m. The winner from both games will square-off for the District 1 title scheduled for Saturday.
Coach Randy Reber's Winged Lions reached the Pioneer Athletic Conference Final Four playoff finals before bowing to Class AAAA entry Spring-Ford, 59-53, back on Feb. 10, also at Strom Gymnasium.
St. Pius X has senior leadership with Chris Flick (12.7 points per game), Chad DiFebbo (10.9, 25 threes), Mike Curry and Dave Bilinski in the starting lineup. Sophomore Matt King (10.2, 47 threes) is the fifth starter.
Joe Pritiskutch and Mike Urie are first off the bench for the Winged Lions.
St. Pius X, the defending district champion, was slated to have a bye before Christopher Dock made a late entry into the tournament.
"They (Pioneers) have lost some tough games," Reber said. "They compete real hard. They played a lot of teams tough, but they haven't been able to get over the hump."
Christopher Dock is guard-oriented and is led in scoring by senior guard David Volpe, who is from a family of brothers who have played for the Pioneers. He averages in double-figures.
Senior guard Chris Markley and junior swingman John Tyson are their other key performers on the offensive. Inside, the Pioneers have some size in 6-foot-5 Evan Haldeman.
One of Dock's better games came against Lower Moreland, which the Pioneers dropped by six points.
Reber is glad to have the additional game before the finals because of the customary long layoff. The Winged Lions did scrimmage a tough road foe in Kennett from Class AAA, but that was last Tuesday. So Pius is coming off a week-long layoff that makes Reber wary of what might happen.
"I was glad when they came in (to tournament)," Reber said. "We would have gone three more days without playing a game.
"You never know in the playoffs. Each team is different."