Clairton shocked many by advancing to the WPIAL Class A championship game last season.
Friday, the Bears took the first step toward what they hope will be another surprising playoff run.
Jaquan Ford scored 15 points and No. 10 Clairton beat No. 7 Sewickley Academy, 55-51, in a first-round game Friday night at Montour that stretched into overtime.
Clairton (10-6) advanced to the quarterfinals and will face No. 2 and defending champion Vincentian in a rematch of the 2013 title game.
Clairton's Rashead Pacley scored 14 points and Isaiah Hollis had 13.
Sewickley Academy (13-8), which took a 19-13 first-quarter lead, got a team-high 16 points from Anthony Muscato.
Clairton outscored Sewickley Academy, 13-9, in overtime after regulation play ended at 42-42. Pacley and Hollis made 3-pointers in the extra period.
Other Class A first round
■ Lincoln Park 84, Mapletown 27: Maverick Rowan scored 23 points, Ryan Skovranko 17 and Antonio Kellem 14, as the No. 1 Leopards cruised to the win against the Maples (7-13) at Keystone Oaks. The Leopards outscored the Maples, 26-0, in the first quarter.
■ Vincentian 85, Trinity Christian 44: Jay Cortese scored 18 points and Ryan Wolf added 15, leading the Royals (21-2) to a rout of the Falcons (9-14) at Fox Chapel. Vincentian led by 23 at the half and outscored the Falcons, 29-7, in the third quarter.
■ North Catholic 75, Winchester Thurston 45: Timon Gribbin made seven 3-pointers and scored 24 points to lead the No. 4 Trojans (14-9) to the win against the Bears (11-10) at North Hills. Ryan Kirby and John Savulchak added 18 points apiece for the Trojans. Tyler Coleman led the Bears with 19.
■ Monessen 78, Eden Christian 54: At Chartiers Valley, the No. 3 Greyhounds (18-5) got 22 points from Clintell Gillaspie and 20 from Javon Brown to roll past the Warriors (9-13). Eden Christian was making its first WPIAL playoff appearance. Carter Ehms led the Warriors with 21 points.
■ Wilkinsburg 74, Union 62: Isaiah Pete had 28 points, 10 rebounds and five steals to propel the No. 6 Tigers (13-7) to a victory against the Scotties (10-13) at Butler. The Tigers led by 26 points after three quarters. Ben Young had 26 points for Union.
■ Western Beaver 77, Carmichaels 37: Nick Miller's 34 points helped the No. 9 Golden Beavers (15-6) roll to a victory against the Mighty Mikes (15-6) at Moon. John Petrosky added 16 points for the Golden Beavers, while Brandon Lawless scored 14 for the Mighty Mikes.
■ Our Lady of the Sacred Heart 86, St. Joseph 36: Cameron Johnson's 20 points propelled the No. 5 Chargers (18-5) to the win against the Spartans (8-15) at Northgate. Ian Schrenk scored 16 for the Chargers, who led by 28 points at halftime.
Class AAA preliminary round
■ South Fayette 54, Greensburg Salem 42: Nick McKee had four 3-pointers among his 16 points to push the Lions (13-9) to a win against the Golden Lions (10-13) at Peters Township. South Fayette held Greensburg Salem to 10 points in the first half. The Lions will play No. 4 Elizabeth Forward in the first round.
■ West Mifflin 63, Laurel Highlands 51: Aaron Adams scored 20 points and Karlyn Garner 10 for the Titans (13-6), who eliminated the Mustangs (11-11) at Plum. David Rusko led the Mustangs with 22 points.
■ Mount Pleasant 70, Kittanning 53: Mitch Matlas scored 20 points and Marcus Malara added 17 to vault the Vikings (16-6) to the victory against the Wildcats (7-16) at Hempfield. The Vikings will face No. 1 Chartiers Valley next.
■ Ambridge 71, Keystone Oaks 58: Daylon Carter scored 25 points and Stephon McGuiness had 21 in leading the Bridgers (17-6) past the Golden Eagles (5-17) at North Allegheny. Braydon Griffiths and Erat Ojak had 15 points apiece for the Golden Eagles. The Bridgers' next opponent will be No. 5 Uniontown.
■ West Allegheny 54, South Park 47: The Indians (13-10) advanced by defeating the Eagles (7-16) at Baldwin. The Indians will play No. 3 Thomas Jefferson in the first round.
City League quarterfinals
■ Allderdice 71, Brashear 38: James Jackson scored 17 points and No. 3 Allderdice (17-5) raced to a 25-point halftime on its way to the home win against Brashear (2-20). The Dragons will play No. 2 Perry Tuesday in the semifinals.