Akie Iwai fired a bogey-free 6-under-par 66 on Sunday at Columbia Edgewater Country Club to breeze to the Standard Portland Classic title -- the first LPGA win for the 23-year-old rookie from Saitama, Japan.

Iwai opened the final round with a two-shot lead, but she birdied three of the final five holes to finish at 24-under-par 264 for a four-shot victory margin over Gurleen Kaur.

Iwai joined her identical twin sister, Chisato, as first-time LPGA Tour winners this season. Chisato celebrated Akie’s triumph Sunday by greeting her on the 18th green with champagne -- repaying Akie’s gesture when Chisato won the Mexico Riviera Maya Open in May.

“So this year she won, so really inspired me,” Akie said. “Yeah, that’s why I do my best this year.”

Kaur, 25, authored a 7-under 65 on Sunday to cl

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