Kim leads LPGA event, Oh best of Aussies

Sei Young Kim made a 12-foot eagle putt on the 17th hole to pull away from the pack with a seven-under 65 for a two-shot lead after the opening round of the season-ending Tour Championship.

At stake is the richest prize ever in women's golf, with $US1.5 million going to the winner, regardless of her position in the Race to CME Globe standings.

Su Oh is leading a contingent of four Australian players.

She fired a three-under par 69 to be two shots ahead of compatriot Minjee Lee.

Katherine Kirk finished at even par while Hannah Green had two double bogeys in a four-over round of 76.

Kim, already a two-time winner on the LPGA this year, was bogey-free on a pleasant, breezy Tiburon Golf Club.

Nelly Korda ran off three straight birdies on the front nine and really poured it on late, playing her final three holes in four under.

That put Korda, at No. 3 the highest-ranked American in women's golf, at 67 with So Yeon Ryu and Georgia Hall.