Prep sports roundup: Justin Kirchner’s pitching, James Tronstein’s hitting lead 8-0 win for Harvard-Westlake

For those making lists of top high school baseball prospects for the 2026 draft, you better start paying attention to Harvard-Westlake shortstop James Tronstein, a Vanderbilt commit who should progress quickly because of what he does with his bat.

In his final performance Tuesday against Sherman Oaks Notre Dame, he had a line drive single past the shortstop, an RBI triple off the center fielder’s glove, a bunt single and an RBI double off the right fielder’s glove in the Wolverines’ 8-0 win. He increased his season batting average to .526 with 30 hits, including four home runs.

“I just play baseball,” said the senior with a 4.0 GAA. He was an outstanding center fielder last season. He is now a shortstop with just three errors in 19 games. The dynamic is taking shape for him and his teammates.

“It’s a blessing and I’m very grateful for the opportunities,” he said.

Harvard-Westlake junior Justin Kirchner improved to 8-0 with a complete-game shutout against Sherman Oaks Notre Dame.

(Craig Weston)

Harvard-Westlake’s ace pitcher, junior Justin Kirchner, made a fantastic first impression in the first inning. He threw 10 pitches, nine of which were strikes and led to three strikeouts. He finished with three batters, striking out six and walking one to improve to 8-0. He has no hits this season and has improved with each start. He said his progress has to do with the team improving, with hitters giving him runs and the defense making plays.

“I definitely grew as the season went on,” Kirchner said. “Our team has grown. Our offense has grown.”

Ira Rootman had three hits and freshman Louis Lappe contributed two hits and three RBIs.

It was the first game of a three-game Mission League series with the Knights (14-4, 7-1), sitting in first place, but with Harvard-Westlake (15-4, 6-2), Bishop Alemany (14-4, 6-2) and Sierra Canyon (15-3, 6-2) closing out quickly. The two teams play again Wednesday night at Notre Dame and Friday at O’Malley Family Field.

Mgr Alemany 10, Chaminade 6: Maverick Cederlind had two doubles and four RBIs and Mikey Martinez went three for three to lead the Warriors.

Sierra Canyon 4, Saint-François 1: Brayden Goldstein had two hits and two RBIs and Armando Solorio allowed one run in five innings.

Crespi 11, Loyola 9: An eight-run fourth inning helped the Celts win their first Mission League game. Krystan Bell had a home run and two RBIs. Bobby Rapp finished with three hits and four RBIs for Loyola.

Saint John Bosco 5, Santa Margarita 1: The Braves handed Tyler George his first loss. James Clark homered in the first inning and Noah Everly added three hits. Julian Garcia struck out 12 in six innings.

Orange Lutheran 8, JSerra 3: Eric Zdunek had a home run, two singles and three RBIs and Ricardo Hurtado also homered for the No. 1 ranked Lancers.

Mater Dei 4, Servite 2: Sebastian Navarro homered and Brady Guth had an RBI single in the first inning of the Monarchs’ victory. Tristan Ramos also homered.

Cypress 5, Eldorado 0: Dylan Keliiholokai hit two homers and finished with four RBIs in the big Crestview League victory. Drew Slevcove struck out nine with no walks in a complete game.

Villa Parc 2, Buttress 1: Jack McGuire struck out 16 and Justin Lopez homered on the go-ahead run.

Granada Hills 4, Cleveland 0: Luke Chau struck out six in four scoreless innings to lead the Highlanders to a West Valley League victory. Cayden Lazar contributed a two-run double.

La Mirada 3, Warren 2: The Matadores won it in the bottom of the seventh on a loaded walk. Jesse Colon had three hits.

West Lake 2, Calabasas 0: Micah Cummins pitched six shutout innings and Harris Lee got the save. Caden Atkinson drove in both runs with a two-run double.

Thousand Oaks 15, Oaks Christian 10: Jake Ange hit his eighth homer, a three-run shot, and Gavin and Jameson Berigan each had three hits in the Lancers’ wild Marmonte League victory. Ryan Sheffer hit a three-run homer for Oaks Christian.

Newbury Park 7, Agoura 3: Carson Richter contributed two doubles and two RBIs for the Panthers.

Huntington Beach 16, Fountain Valley 4: Owen Bone and Ely Mason each had three hits and three RBIs.

Edison 8, Marina 6: Andy Van Den Eynden finished with two hits and four RBIs for Edison.

Corona del mar 3, Los Alamitos 2: A sacrifice fly in the bottom of the ninth by Brady Zenz gave Corona del Mar the walk-off victory.

Softball

Chaminade 12, Harvard-Westlake 1: A 10-run third inning broke the game open for Chaminade. Finley Suppan had two hits and two RBIs and also earned the pitching victory. Siena Greenlinger finished with two hits and three RBIs.

Garden Grove Pacifica 4, Cypress 3: Natalie Pacheco broke a 3-3 tie with an RBI single in the seventh for Pacifica.

Orange Lutheran 13, Santa Margarita 0: Cate Medvitz hit a three-run homer and Rylee Silver struck out nine. Melia Munoz added three hits and three RBIs.

JSerra 10, Mater Dei 1: Liliana Escobar struck out 10 in five innings.

Warren 5, La Mirada 1: The Bears handed La Mirada a rare championship defeat.

Sherman Oaks Notre Dame 14, Louisville 2: Brooklyn Mireles hit two homers to lead the Knights. Kelsey Luderer also hit a grand slam.