Kapolei’s Chantelle Lopez pulled off the biggest upset in the girls singles draw on the first day of the OIA tennis championships at Central Oahu Regional Park.
Lopez, who entered the tournament as the fifth seed from the West, swept Moanalua’s Bailee Kawamura 6-2, 6-1 in the first round to draw a match against West champion Sophia Nishimura of Aiea, who swept Yuk Ling Lam of McKinley 6-0, 6-0 in the first round.
Lopez lost the first set 4-6 but battled back to beat Nishimura 6-2 in the second and then won the tiebreak to move into the semifinals.
East champ Lisa Owen of Kaiser swept both her matches to sit on the top of the other bracket.
Division champions Andre Ilagan of Farrington and Zion Heaven of Campbell are still alive in the boys draw, with Ilagan dropping just two games in two matches and Heaven dropping three.
Both top seeds are still alive in boys doubles, with Mililani providing three of the four teams.
The West ruled the day in girls doubles, with all four seeds from that division making it through to the semifinals. East champs Salamasina Tei and Ana Huhane of Kahuku lost 6-0, 6-3 to Elyssa Shirai and Leina Mizusawa of Pearl City and East runner up Janet Chen and Jeannie Ho of Roosevelt were swept by Mililani’s Taryn Fujimori and Tayler Dela Cruz 6-2, 6-2.
Mililani has won the last two boys team titles and hasn’t lost the girls title since 2008.
All semifinals are at 9:45 on Saturday at Central Oahu Regional Park with finals to follow at 1 p.m.
Boys singles semifinals
E1 Andre Ilagan, Farrington vs. E3 Chad Aoki, Kalani
E2 Darrell Huang, Kalani, vs. W1 Zion Heaven, Campbell
Girls singles semifinals
E1 Lisa Owen, Kaiser, vs. W2 Leilani Yamanouchi, Pearl City
W3 Halie Chang, Mililani, vs. W5 Chantelle Lopez, Kapolei
Boys doubles semifinals
E1 Rayden Murata and Koby Murata, Kalani, vs. W2 Ryan Hirokani and Elisha Lin, Mililani
W3 Tobey Chang and Sean Balignasay, Mililani, vs. W1 Jace Akagi-Okuma and Davin Lee, Mililani
Girls doubles semifinals
W4 Elyssa Shirai and Leina Mizusawa, Pearl City vs. W2 Erin Jyo and Kaua Beamer, Mililani
W3 Taryn Fujimori and Tayler Dela Cruz, Mililani, vs. W1 Haley Fujimori and Alysse Nakasato, Mililani