Anthony Welsh went four for four with three RBIs for visiting Orange (12-12), which will play Santa Ana Valley in the first round Friday at Santa Ana Valley. Fullerton finishes at 14-11.
Silverado 17, Kaiser 8
David Kowal had three doubles and Jimmy Gleason went two for four, hitting a three-run home run in the fourth inning, for host Silverado (9-11). Kaiser is 17-10. Silverado will play La Habra on Friday.
Walnut 10, Victor Valley 0
Michael Campos (7-1) gave up four hits and struck out six in five innings and Kyle Necke went four for four with a double, two RBIs and two runs scored to lead host Walnut (15-10). Victor Valley finishes at 9-14.
Garden Grove Pacifica 4, Rosemead 3
Junior Eric Mahler had the game-winning two-run single in the bottom of the sixth inning and junior outfielder Brian Mascarenas was hit by a pitch in the first inning after attempting a bunt but stayed in the game and had an RBI double in the sixth inning for Garden Grove Pacifica (15-11-1). Senior right-hander Henry Barrera pitched six innings and struck out 10 and went two for three with one RBI for visiting Rosemead (10-13-2).
Gardena Serra 5, Bishop Montgomery 2
David Leyva (7-4) allowed three hits and had nine strikeouts over seven innings and Hector campos went three for four including two doubles and had one RBI and two runs scored to lead host Gardena Serra (13-14). It was the first time the Panthers have defeated Bishop Montgomery (12-14).
Lompoc Cabrillo 5, Santa Paula 0
Senior Matt Hansen hit a three-run home run for his third homer of the season and Evan Fields struck out six and gave up four hits in five innings to lead host Cabrillo (17-10), which will face Corona del Mar on Friday at 3:15 p.m. Chris White went two for four with a double for Santa Paula (12-12).
Oak Park 4, Serrano 3
Oak Park will play at second-seeded St. Paul Friday.
Beaumont 7, Western Christian 6
Freshman Brent Bray came in the sixth inning with the bases loaded and pitched a scoreless seventh inning, striking out the final batter, for his second save of the season and Jeff Fox drove in Bobby Pepper on a sacrifice fly in the fourth inning for the go-ahead run to lead host Beaumont (15-8) over Western Christian (9-15).
Brentwood 4, Salesian 3
Max Mann went two for three with a two-run home run and finished with three RBIs to lead host Brentwood (10-14).