Defending champion Park In-bee has fallen to third place in the world ranking as she finished 15th at the Wal-Mart NW Arkansas Championship in Pinnacle Country Club in Rogers, Arkansas, with 7-under 206 on Sunday.
Stacy Lewis of the U.S. edged out Korean-New Zealander Lydia Ko by one stroke to claim the title with 12-under. This is her third title of the season and 11th career title.
Lewis held on to the world's top position for the fifth week in a row with 12.15 ranking points in the list released Monday. She ended Park's 59-week run at the top of the sport in early June.
And Park was overtaken by Ko to fall another notch to No. 3 in the latest ranking.