LEWISBURG — The WPIAL will have four of the top five seeds for the championship heat of the Class 3A boys 100-yard freestyle Thursday evening at the PIAA swimming championships at Bucknell.

Upper St. Clair senior Nazar Zoukovski (44.80) finished first in the morning preliminaries, with Mars sophomore Dom Davis second, Upper St. Clair senior Ben Whiteford fourth and North Allegheny senior Zach Totin fifth.

Cinco Perez, a senior from Central Catholic, gave the WPIAL a second boys No. 1 seed as he swam to a top time of 4:27.06 in the prelims of the 500 free. North Allegheny junior Jackson Ross is the fifth seed, Franklin Regional junior Thomas Westerman is seventh, and Peters Township sophomore Wyatt Stetor is eighth.

Whiteford will go after his second medal in three races when he enters the 100 backstroke final as the No. 2 seed (48.56).

Right behind Whiteford is North Allegheny senior Danny Lesinski (third seed), and Bethel Park junior Jackson Edwards is seeded sixth.

Latrobe senior Chris Heese, the WPIAL champion in the 100 breast, will go after state gold this evening as the sixth seed (55.02) in the championship final.

North Allegheny seeks a relay state-title sweep as the No. 1 seed in the 400 free relay. Lesinski, Alex Harbaugh, Mason Shantz and Dylan Seiford clocked a time of 3:05.67, a half second faster than their time from WPIALs.

Peters Township junior Ava Komoroski will try to take down sprint champion Molly Workman, a senior from State College, in the championship heat of the girls 100 free. Workman and Komoroski are seeded first and second, respectively.

North Allegheny senior Claire Bacu will shoot for her second PIAA title in as many days (200 free) when she swims as the top seed in the finals of the 500 free.

Fox Chapel freshman Ellie Lange is the third seed with North Allegheny junior Julia Tengowski seeded fifth after her prelim swim.

Fellow Foxes freshman Delaney O’Toole, second Thursday in the 50 free, will go after gold as the No. 1 seed in the 100 backstroke (54.46). She is the only WPIAL swimmer seeded in the championship heat.

The girls 400 free relay will have a pair of WPIAL powers among the top three seeds. Fox Chapel is seeded second (3:27.63), and North Allegheny is right behind the Foxes in third. Fox Chapel and NA finished 1-2 at WPIALs.

State College is the top seed (3:25.83).

The boys’ consolation and championship finals will be at 4:30 p.m. with the girls’ finals to follow at 7.

The eight entries in each championship heat will earn medals.

Pennsylvania Cable Network will provide live coverage of each consolation and finals heat.

A Class 3A girls diving champion will be crowned this afternoon, and North Allegheny senior Maggie Lapina, the WPIAL champion, will go after her second PIAA medal as the No. 2 seed. WPIAL runner-up Ali Waters, a senior from Seneca Valley, is the third seed, while Mars junior Marin Raible is seeded fourth, and Upper St. Clair junior Livia Tranquilli is ninth.

The winner will be determined after the final dive at about 3:30 p.m.