Akie Iwai hits off the 15th tee during the first round of the LPGA Portland Classic golf tournament at Columbia Edgewater in Portland, Ore. on Thursday.

Akie Iwai joined twin sister Chisato as a rookie LPGA Tour winner Sunday at Columbia Edgewater, closing with a six-under 66 for a four-stroke victory in The Standard Portland Classic.

Akie Iwai capped the bogey-free round with birdies on the final two holes, running in an 18-footer on the last before Chisato rushed on the green and sprayed her with champagne.

The 23-year-old Japanese player broke through in her first season on the LPGA Tour after winning six times on the JLPGA Tour.

She had second-place finishes in Thailand in February and Los Angeles in April, then watched her sister win at Mayakoba in May in Mexico. On Sunday, Chisat

See Full Page