Events to watch

These are some of the key matchups in high school sports on O'ahu this week (won-lost records are as of today):

TODAY

• GIRLS SOCCER — OIA Championship Tournament semifinals at Mililani: Pearl City (10-0-1) vs. 'Aiea (10-2-0), 5:15 p.m.; Mililani (10-0-1) vs. Kahuku (8-2-1), 7 p.m. Winners play Saturday. Iolani (4-3 ILH) at Kamehameha (5-2), 4:15 p.m.
• SOFTBALL — OIA Championship Tournament first round: Campbell at Moanalua, Kahuku at Kapolei, Leilehua at Kaimuki, Roosevelt at Pearl City, all at 3:30 p.m.

TOMORROW

• BOYS BASKETBALL — Pearl City (8-0 OIA West) at Radford (8-0), Roosevelt (7-1 OIA East) at Castle (7-1), both 7 p.m.
• BOYS SOCCER — OIA Championship Tournament semifinals at Mililani: Mililani (9-0-1) vs. Castle (8-1-2), 5:15 p.m.; Pearl City (8-1-1) vs. Roosevelt (8-3-1), 7 p.m. Winners play Saturday.
• SOFTBALL — ILH championship, Kamehameha vs. Punahou at Mid-Pacific, 3:45 p.m.; OIA Championship Tournament quarterfinals, today's winners at seeded teams (Mililani, Kailua, Castle, Wai'anae), 3:30 p.m.

THURSDAY

• BOYS BASKETBALL — Iolani (10-0 ILH) at Saint Louis (8-2), 6:30 p.m.
• SOFTBALL — OIA Championship Tournament semifinals at fields of higher-seeded teams, 3:30 p.m.

FRIDAY

• SWIMMING — OIA Western Division championships at Kalani, 3 p.m.
• WRESTLING — OIA team semifinals and championships at Moanalua, 5 p.m.

SATURDAY

• BOYS BASKETBALL — Pearl City (8-0 OIA West) at Leilehua (7-1), 7 p.m. Punahou (9-0 ILH Division II) vs. Hanalani (6-0) at Mid-Pacific, 6 p.m.
• SOCCER — OIA championship games at Pearl City, girls 5:30 p.m., boys 7:30 p.m.
• SOFTBALL — OIA third place and championship games at Kailua High, 1 p.m.
• SWIMMING — OIA Eastern Division championships at Kalani, 2 p.m.