WAIPI'O — Freshman Ryan McMonigle tossed a four-hitter with seven strikeouts yesterday to help Kailua blitz past 'Aiea, 10-3, in the O'ahu Interscholastic Association baseball semifinals.

The Eastern Division champion Surfriders, ranked No. 4 in The Advertiser's statewide Top 10 poll of coaches and media, improved to 12-2 in league play and will face West champ and No. 3-ranked Pearl City (12-2) at 6:30 p.m. tomorrow for the title at Patsy Mink Central O'ahu Regional Park.

The game, a rematch of last year's championship final won by Pearl City, will be televised live statewide on OC16.

McMonigle, a 5-foot-10, 145-pound right-hander, and the Surfriders were down 2-1 in the second but got big support with Kale Sumner's three-run homer over the left field fence in the second inning, followed by a six-run third.

That was more than enough, as McMonigle shut out Na Ali'i over the next three innings until Kanekoa Asing's home run to lead off the top of the seventh. McMonigle then retired the side in order to complete the game.

"I was a little bit (nervous) in the first couple innings, but then we had a couple good innings (offensively) and I felt better after that," McMonigle said. "It was a confidence booster, knowing I had my defense and my offense behind me."

Kailua took a 1-0 lead in the bottom of the first inning after Sumner walked, advanced to second on Scott Talaesea's infield single, took third on an error and scored on Rob DeMarsh's sacrifice fly to left.

'Aiea came back and took a 2-1 lead in the second after Randy Castillo's two-run triple to left field.

But the Surfriders answered in the bottom of the second with Sumner's three-run blast, then exploded with six runs on five hits and an error in the third. Elia Lono brought in the first two runs with a single to left with the bases loaded, Jared Iha followed with a run-scoring single to left and Ryan Kinoshita added an RBI single to center.

Talaesea then capped the rally with a two-run double to right.

"They all can hit," Na Ali'i coach Ryan Kato said.

Meanwhile, McMonigle pitched shutout ball in innings 3 through 6, allowing only a walk in the fourth and a single in the sixth — both with two outs.

"He has ice in his veins," Kailua coach Corey Ishigo said. "He showed that to us all summer and during the JV season."

'AIEA (9-5) 020 000 1 — 3 4 2

KAILUA (12-2) 136 000 X — 10 10 1

Tyler Abasial, Travis Nishida (3), Kevin Shibata (3), Keenan Naeole (3) and Jacob Arakawa. Ryan McMonigle and Keenan Tanaka. W — McMonigle. L — Abasial.

Leading hitters — 'Aiea: Kanekoa Asing 2-2, home run; Randy Castillo triple, 2 RBIs. Kailua: Kale Sumner home run, 3 RBIs; Scott Talaesea 2-4, double, 2 RBIs; Jared Iha 2-2, RBI; Elia Lono 2 RBIs.

PEARL CITY 7, CASTLE 0

At CORP, Cory Yuh pitched a two-hitter with eight strikeouts and one walk and Bryson Namba hit a 3-run homer in the fifth inning to lift the Chargers (12-2) over the Knights (9-5).

Pearl City took a 1-0 lead on Kurt Poentis' RBI single in the third inning, then went up 2-0 in the fifth on another RBI single by Poentis. One out later, Namba launched a three-run shot over the left field fence.

Meanwhile, the only hits Yuh allowed were a single by Kainoa Tom leading off the game and a single to left by Kaliko Cayetano Tamashiro leading off the fourth. The only Knights runners to reach second were Pulama Silva (walk) in the second and Cayetano Tamashiro (error) in the seventh.

"Everything was working — fastball, change, curve, slider," Yuh said. "I just tried to throw strikes and go after the hitters."

CASTLE (9-5) 000 000 0 — 0 2 0

PEARL CITY (12-2) 001 042 X — 7 10 1

Bryan Raines and Coby Agres. Cory Yuh and Carlton Tanabe. W — Yuh. L — Raines.

Leading hitters — Pearl City: Kurt Poentis 3-3, 2 RBIs; Bryson Namba home run, 3 RBIs; Yuh 2-2, RBI; Ryno Acosta 2-3; Bully Casarez double; Duane Kiyota double.

Reach Wes Nakama at wnakama@honoluluadvertiser.com or 535-2456. Read his blog on prep sports at preptalk.honadvblogs.com

OIA RED FIFTH PLACE

ROOSEVELT 9, KAISER 3: Lowen Kaho'oilihala went 2 for 5 and drove in three runs, and Kelson Okimoto and Billy Kamau combined to scatter five hits as the Rough Riders (9-7) beat the Cougars (10-6) at CORP to clinch the OIA Red's fifth and final state tournament berth.

ROOSEVELT (8-5) 002 700 0 — 9 17 1

KAISER (8-4) 000 012 0 — 3 5 1

Kelson Okimoto, Billy Kamau (6) and Tyler Nitihara. Zach Wong, Kekoa Torres (4), Shotaro Saito (5), Cal Tashiro (6) and Bryce Marcouiller. W — Okimoto. L — Wong.

Leading hitters — Roosevelt: TJ Bae 2-5, double, 2 runs, RBI; Zach Tamasaki 3-4, RBI; Lowen Kaho'oilihala 2-5, 3 RBIs; Nitihara 2-4, triple; Casey Tanabe 2-4, RBI; Aaron Yamane 2-4. Kaiser: Joe Honma 2-3, double, RBI.

Reported by Tizzle Takanishi

OIA WHITE SEMIFINAL

RADFORD 11, KALAHEO 2: Brad Osborne tossed a five-hitter and drove in two runs, and Matthew Tsuneda and JD Fontenot each had two RBIs, leading the Rams (8-3) over the Mustangs (10-2) at Kailua District Park and into the championship game of the OIA White tournament.

RADFORD (8-3) 050 114 0 — 11 9 1

KALAHEO (10-2) 001 100 0 — 2 5 6

Brad Osborne and Zach Seitz. Colby Lee, Aaron Fernandez (2), Sean Ouchie (7) and Steven Vega Liwaika Bator (3). W — Osborne. L — Lee.

Leading hitters — Radford: Matthew Tsuneda 2-3, 2 doubles, 2 RBIs; Osborne 2 RBIs, JD Fontenot 2-4, 2 RBIs. Kalaheo: Kord Walls 2-4, Lee double.

Reported by Tim Lierman