Open Extended ReactionsPORTLAND, Ore. -- Akie Iwai joined twin sister Chisato as a rookie LPGA Tour winner Sunday at Columbia Edgewater, closing with a 6-under 66 for a four-stroke victory in The Standard Portland Classic. 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, Chisato Iwai shot a 64 to tie for third, five strokes back. The tournament is the longest continuous event on the LPGA Tour except for the majors, dating to 1972.