WPIAL baseball pairings

North Allegheny, Moon, Shady Side Academy and Serra Catholic are the defending champions and each has an excellent chance to repeat. NA is the top seed in Class AAAA. Moon is the No. 2 seed in AAA. Shady Side Academy is seeded fourth in AA, while Serra is the top seed in A.

South Fayette, Washington and California are the local teams with high seeds in their respective brackets.

First round
Class AAAA
No. 5 Peters Township (14-6) vs. No. 12 Hempfield (11-9), Monday, 7 p.m. at Washington & Jefferson's Ross Memorial Park. The Indians can hit. They need pitching to make another playoff run.

Class AAA
No. 12 Trinity (11-5) vs. No. 5 Laurel Highlands (15-4), Monday, 2 p.m. at Mt. Pleasant. Trinity is the only local team to make the PIAA playoffs in each of the past three years.

Class AA
No. 1 South Fayette (17-1) vs. Riverview/Deer Lakes winner, Tuesday, site and time TBD. The Lions reached the PIAA finals last year and have not lost to a WPIAL team this year.

No. 3 Washington (13-5) vs. No. 14 Seton-La Salle (12-4), Monday, 4:30 p.m. at Upper St. Clair. The Prexies haven't won a playoff game since 2005, losing their last five.

No. 13 Waynesburg (11-5) vs. No. 4 Shady Side Academy (17-2), Monday, 2 p.m. at W&J's Ross Memorial Field. A dominant program a decade ago, Waynesburg makes its second playoff appearance since 2001.

Class A
No. 3 California (18-2) vs. No. 14 Carmichaels (7-12), Monday, 4 p.m. at Beth-Center. These two friendly rivals have won five WPIAL Class A titles the past decade. California beat Carmichaels, 16-2, in early April.

No. 5 Beth-Center (11-5) vs. NO. 12 OLSH (11-6), Monday, 2 p.m. at Upper St. Clair. The Bulldogs went undefeated in Section 1 but are 1-5 out of section. Four of those losses came against Peters Township, California, Jeannette and Waynesburg.

No. 6 Bentworth (16-3) vs. No. 11 Cornell (10-6), Monday, 4:30 p.m. at W&J's Ross Memorial Field. The Bearcats have lost two games to Class A teams, each by one run.

No. 9 Jefferson-Morgan (11-6) vs. No. 8 Jeannette (12-4), Monday, 4 p.m. at Baldwin. Tough to get a read on the Rockets. They beat Brownsville but lost to Chartiers-Houston, Bentworth and Avella out of section.

No. 10 Chartiers-Houston (12-6) vs. No. 7 Monaca (12-5), Monday, 4:30 p.m. at the Burkett Sports Complex. The Bucs are the only Class A team to play within five runs of Serra Catholic, a 14-11 loss in early April.