Leona Maguire finished tied for 26th after day one of the Marathon LPGA classic in Ohio shooting a two under par 69.
Maguire shot birdies at the par three eighth and at the par four ninth and 12th. A bogey at 11 saw Maguire finish two under par, eight shorts off leader Nasa Hataoka of Japan on 10 under.
American Lauren Stephenson is second on six under par.
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Maguire was selected for Tokyo 2020 last week with the competition just three weeks away.