Roosevelt second baseman Kylie Kawamura makes a throw to first as Pearl City's Maiyah Faleafine-Lesu tries to advance to second. Greg Yamamoto | SL

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MAKIKI — Jaeda Cabunoc pitched six innings of three-hit ball and Tiani Sniffen drove in a pair of runs on an inside-the-park home run to lead No. 9 Roosevelt to a 4-2 win over No. 4 Pearl City in the quarterfinals of the Oahu Interscholastic Association Division I softball tournament Thursday.

A crowd of about 100 fans on a humid afternoon at Stevenson Middle School saw the Rough Riders record their seventh consecutive win to improve to 12-1 on the season and lock up one of the league's sixth berths in next month's DataHouse/HHSAA State Championships.

Roosevelt, the top seed out of the Eastern Division, will play second-ranked Leilehua at 5 p.m. Friday at McKinley. The nightcap of the semifinal doubleheader will feature No. 3 Kapolei taking on top-ranked Campbell.

The West fourth-seeded Chargers, who were coming off an 8-7 win over Castle in Wednesday's opening round of the tournament, fell to 8-6. They will play host to Waianae in a fifth-place semifinal at 3 p.m. Friday.

"It feels great because our seniors' goal was to make it to states so we just did what we had to do and we did it for them," Sniffen said.

Cabunoc, junior right-handed pitcher, kept Pearl City off the scoreboard in her six innings of work. After giving up a one-out single to the second batter she faced Thursday, Cabunoc retired a string of nine straight batters before running into some trouble in the middle innings.

"She did good," Roosevelt coach Kristin Fujii-Dias said of Cabunoc. "She got rattled a little bit when they started to rally, but the good thing was she settled down in both of those innings and she got us out of the inning."

In the top of the fourth, Hailey-Alexis Yamaguchi drew a two-out walk and went all the way to third on Tiari Hernandez's double to left field, but Cabunoc got Alexas Presto-Asing to pop out to catcher Haylie Uetake to strand both runners in scoring position and get out of the jam unscathed.

An inning later, Cabunoc walked Jozayah Iriarte to lead off the Pearl City fifth. Drew Hashimoto came off the bench to courtesy run for Iriarte, the pitcher, but was thrown out trying to steal second by Uetake. Cabunoc walked two of the next three batters to again put a pair of runners in scoring position.

"I was just losing it. I was rushing myself, wasn't taking my time, so when I rush myself I tend to lose control, I tend to walk a lot of batters, but once I calm down then I'm all good," Cabunoc said.

Once again, however, she escaped the threat after striking out Noel Saunders looking for the third out of the inning.

"She was second guessing herself and pressing. I think for any pitcher to come back after struggling, that's a big accomplishment so all credit to her, she did what she had to do and that's what she needs going forward," said Fujii-Dias whose only mound visit came just before Cabunoc's punch out of Saunders.

Cabunoc said the conversation allowed her to re-gather herself before working to the Chargers' dangerous leadoff hitter.

"What got me through the inning is my defense, my team," Cabunoc said. "They're always having my back and every time I'm down, they're always there cheering me on, keeping me up so that's what gets me through the whole game, but (Fujii-Dias) reminded me that I have seven players behind me and one in front of me and that they'll always do their job, so that's what helped me get that strikeout against the next batter."

Roosevelt got on the board in the bottom of the first on Mari Foster's RBI-sacrifice fly to score Maya Nakamura. It added to its lead in the fourth when Foster cranked a one-out double to center field and scored three batters later on Cabunoc's two-out bloop single to short right field.

The Rough Riders doubled their lead on one swing in the bottom of the fifth — just minutes after Cabunoc's escaped the jam in the top of the frame. After Kylie Kawamura singled with one out, Sniffen laced a line drive to the gap in right center that split the two outfielders and allowed both of them to score.

"I just saw juice on that pitch," said Sniffen, whose eyes lit up while reconstructing the offering from Iriarte. "It was like right there — middle in — and I just had to swing."

It was Sniffen's fourth home run and eighth extra-base hit this season. She has 20 hits in 42 at-bats (.476 batting average) with 23 runs batted in and 20 runs scored.

"She's seeing the ball good, just like Mari. Her and Mari they're really seeing the ball good, they're making contact, not going for home runs and, you know, we always tell them line drives, that's what we go for. Home runs will comes if you hit line drives," Fujii-Dias said.

Cabunoc allowed a lead off single by Braelynn Kaulu-Choy Foo to start the top of the sixth, but retired the next three batters.

"When I went into the dug out I was kind of down and then when (Sniffen) hit the home run it kind of got my spirits up and helped me through," Cabunoc said.

Pearl City scored a pair of runs in the top of the seventh off of Foster, who started the inning in relief of Cabunoc. Saunders was credited with an RBI after she was hit by a pitch with the bases loaded and Kaulu-Choy Foo scored one batter later on an RBI-fielder's choice by Cheyne Obara.

The Chargers got the tying run to second base in the form of Kaulu-Choy Foo with two outs, but Foster got Yamaguchi to hit an easy ground ball back to her before throwing over to Mika Emoto at first base for the game's final out.

Kaulu-Choy Foo (2 for 4) was the only Pearl City player to pair hits. Iriarte and Maiyah Faleafine-Lesu each drew two walks in the loss.

Iriarte was the losing pitcher after giving up four runs on five hits in 4 1/3 innings. She walked three and struck out none before giving way to Faleafine-Lesu, who walked one and struck out one in 1 2/3 innings.

Cabunoc overcame four walks and had two strikeouts to win her sixth consecutive start. She is now 9-1 on the season with a 1.45 ERA.

Kawamura (2 for 3, run scored) was the lone Roosevelt player to pair hits.

The teams split a pair of meetings in the preseason earlier this year.