By: Chris Harlan

Friday, May 9, 2025 | 3:31 PM

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Christopher Horner | TribLive

North Allegheny’s Nicolas Varlotta drives in two runs with a single during the seventh inning against Shaler on Thursday, May 8, 2025, at Matulevic Field in Shaler.

North Allegheny was the only defending champion to draw a No. 1 seed Friday when the WPIAL released brackets for the upcoming baseball playoffs.

The Tigers were seeded first in Class 6A. The other top seeds went to Pine-Richland in 5A, Indiana in 4A, Riverside in 3A, Neshannock in 2A and Serra Catholic in A.

The playoffs begin Tuesday with first-round games in Class A, 2A and 3A.

Class 4A and 5A start play Wednesday while the Class 6A bracket begins May 19.

The championship games are May 27-28 at EQT Park in Washington.

Class 6A

Quarterfinals

May 19 schedule

Times, sites TBA

Hempfield vs. North Allegheny

Butler vs. Norwin

North Hills vs. Canon-McMillan

Mt. Lebanon vs Seneca Valley

Class 5A

First round

Wednesday’s schedule

Trinity vs. Pine-Richland at Plum, 6:30 p.m.

Latrobe vs. Fox Chapel at Gateway, 7 p.m.

Franklin Regional vs. Bethel Park at Boyce Mayview Park, 7 p.m.

Upper St. Clair vs. Thomas Jefferson at West Mifflin, 7 p.m.

Mars vs. Plum at Fox Chapel, 3 p.m.

Baldwin vs. Peters Township at Boyce Mayview Park, 4:30 p.m.

Montour vs. Shaler at North Allegheny, 7 p.m.

Connellsville vs. Penn-Trafford at Norwin, 4 p.m.

Class 4A

First round

Wednesday’s schedule

Ambridge vs. Knoch at North Allegheny, 4 p.m.

Derry vs. Belle Vernon at Gateway, 4 p.m.

Greensburg Salem vs. Central Valley at Seneca Valley, 6 p.m.

Ringgold vs. Blackhawk at West Mifflin, 4:30 p.m.

Byes: Indiana, West MIfflin, Elizabeth Forward, Beaver

Class 3A

Preliminary round

Monday’s schedule

McGuffey vs. Shady Side Academy at West Mifflin, 5 p.m.

Keystone Oaks vs. South Allegheny at West Mifflin, 7:30 p.m.

First round

Tuesday’s schedule

McGuffey/Shady Side Academy vs. Riverside at Seneca Valley, 6 p.m.

Charleroi vs. Burrell at Gateway, 3 p.m.

Freeport vs. Waynesburg at Gateway, 5:30 p.m.

Mt. Pleasant vs. South Park at Gateway, 8 p.m.

Keystone Oaks/South Allegheny vs. Avonworth at Fox Chapel, 4:30 p.m.

Ligonier Valley vs. Quaker Valley at Fox Chapel, 2 p.m.

Seton LaSalle vs. Ellwood City at North Allegheny, 7 p.m.

Mohawk vs. Deer Lakes at North Allegheny, 4 p.m.

Class 2A

First round

Tuesday’s schedule

Apollo-Ridge vs. Freedom at Plum, 7:30 p.m.

Chartiers-Houston vs. Shenango at Burkett Park, 4 p.m.

Laurel vs. Fort Cherry at Shaler, 2 p.m.

New Brighton vs. South Side at Shaler, 4:30 p.m.

California vs. Riverview at Norwin, 4:30 p.m.

Bye: Neshannock, OLSH, Burgettstown

Class A

First round

Tuesday’s schedule

Winchester Thurston vs. Jefferson-Morgan at Norwin, 2 p.m.

Rochester vs. Bishop Canevin at Burkett Park, 6:30 p.m.

Sewickley Academy vs. Greensburg Central Catholic at Plum, 5 p.m.

Avella vs. Western Beaver at Boyce Mayview Park, 3 p.m.

Union vs. Carmichaels at Boyce Mayview Park, 5:30 p.m.

Bye: Serra Catholic, Eden Christian, Leechburg

Chris Harlan is a TribLive reporter covering sports. He joined the Trib in 2009 after seven years as a reporter at the Beaver County Times. He can be reached at charlan@triblive.com.