Host Sierra was 40 minutes away from being the first to blemish crosstown rival Manteca’s perfect record in Valley Oak League frosh-soph soccer action Thursday at Daniel Teicheira Memorial Stadium.

The Marin brothers kept that from happening.

Giovanni Marin scored once in the second half, and Ricardo Marin assisted two goals in the Buffaloes’ 3-1 victory that improves them to 9-0. Sierra dropped to 3-6.

Niko Gonzalez and Cameron Crippen added one goal apiece.

Sierra heads to Sonora next Tuesday, while Manteca hosts Weston Ranch next Thursday, Oct. 15 following a bye.

At Ripon High, the Indians (8-0 Trans Valley League, 25-1 overall) continued their dominant season with a 25-15, 25-16 sweep.

Madison Allen dished out 18 assists and two aces, and Tyler White churned out four kills and two blocks. Paige Howard and Bridgette Gall added five and three kills, respectively.

At Dalben Center, Anselma Rodriguez produced 10 service points, three aces and three kills to spearhead the Spartans’ thrilling three-game victory (25-16, 20-25, 15-11).

Eliana Young added six points, two aces and two kills; and Briana Lopez had eight points, two kills, six aces and a block.

East Union (2-7 VOL) had two kills apiece form Alex Scopas and Aliysa Hoffman. Marissa Romero led the back row with three digs, and Megan Bautista handed out three assists.

At Sierra High, Gabby Olmo served in 12 points and pounded down three kills, as the Timberwolves (6-3 VOL) claimed a 25-14, 26-24 victory.

Nicole Moreno chipped in eight hits and two kills, and Valerie Nester turned in a kill and a block.

At Dalben Center, the host Pages won 25-18, 25-20 behind a balanced offensive effort.

Jessica Campa and Mariah Burrola (two aces) blasted six kills apiece, while Kayla Lamont (eight assists, three aces) added five of her own.