On a pick-your-agony Saturday evening, the sixth-ranked UC Santa Barbara baseball team dominated every phase in an 11-1 rout of Hawaii at Les Murakami Stadium.

A crowd of 2,261 saw the Gauchos win their 12th in a row to improve to 43-7 overall and a Big West-best 17-3. The Rainbow Warriors fell to 20-26 and 8-12.

The Gauchos amassed 18 hits — the most against UH pitchers this season — led by catcher Eric Yang’s four. The first five Gauchos in the order went a combined 13-for-23.

That was more than enough support for left-hander Jack Dashwood, who allowed two hits in seven innings to boost his record to 9-1. Dashwood struck out eight, and threw strikes on 71.2 percent of his 79 pitches.

“I felt great out there,” Dashwood said. “Yang, our catcher, gave good signs. I tried to execute one pitch at a time. With our defense behind me, it made it a lot easier.”

For the second consecutive night in this three-game series, the Gauchos starting pitcher did not issue a walk. Dashwood, a 6-foot-7, 225-pound sophomore, also did not have a three-ball count in facing 23 batters. He said he relied on a slider and a 92 mph fastball.

“Those are usually my go-to (pitches),” Dashwood said. “Once I get them going, I try to keep that rhythm.”

Dashwood was perfect through the first four innings, an accomplishment he could not ignore.

“I hate to admit it, but I realized what was going on,” Dashwood said. “I tried to zone that out and keep doing what I do.”

But in the UH fifth, Ethan Lopez smacked a 1-2 fastball — Dashwood’s 48th pitch of the game — over the wall in center field. It was Lopez’s fifth homer of the season. But that only closed the ’Bows to 8-1. The Gauchos had seized control from the game’s second at-bat.

UH starting pitcher Aaron Davenport struck out leadoff batter McClain O’Connor, but then lost his groove after that. Andrew Martinez hit a big-hop single past Lopez at short, then scooted to third on Yang’s double to center. Thomas Rowan was struck by pitch to load the bases.

Armani Smith singled to right to score Martinez with the Gauchos’ first run. Tommy Jew followed with another run-scoring single to bring home Yang and reload the bases. Then Marcos Castanon’s two-run single to left made it 4-0.

Davenport lasted only 11⁄3 innings, matching his shortest outing of his 11 starts. He gave up eight hits and five runs while throwing 43 pitches.

“Our freshman threw like a freshman,” UH coach Mike Trapasso said of Davenport. “He couldn’t throw a ball below the belt. He gives up four in the first, and that’s really the end of the game.”

Lii Pontes, who replaced Davenport, relinquished three runs in the fourth as the Gauchos extended their lead to 8-0. In that inning, Martinez doubled home O’Connor, and eventually scored on Smith’s groundout. Yang scored the Gauchos’ third run of the fourth on Pontes’ wild pitch. The ’Bows combined to throw three wild pitches.

The Gauchos closed their scoring with Cole Mueller’s RBI single.

The Gauchos added two runs in the sixth to extend their lead to 10-1. O’Connor opened with a double and, one out later, scored on Yang’s single to right-center. Yang went to second on Dominic DeMiero’s wild pitch, advanced to third on Rowan’s groundout, and scored on Smith’s double.

Once again, the ’Bows went with a makeshift infield. With shortstop Maaki Yamazaki unavailable to field because of a sore right shoulder, Lopez moved from third to short and Dallas Duarte played third. Duarte, who can catch and play second, had never played third until this season. Yamazaki was beckoned as a pinch hitter in the ninth. He lined out to third.