AFP - Jiyai Shin, vying to add the LPGA Player of the Year award to Rookie of the Year honors, seized the lead in the Lorena Ochoa Invitational with a six-under 66.

The 21-year-old from South Korea, a three-time winner on the US tour this year, came into the event with a four-point lead over world number one Ochoa in the player of the year race.

She topped the leaderboard on Friday at 11-under 133.

Americans Michelle Wie (66) and Paula Creamer (69) were tied for second on 136. Overnight leader Song-Hee Kim of South Korea fired a 72 for 137.

It was a further two strokes back to Norway's Suzann Pettersen (67), Brittany Lincicome (70), Cristie Kerr (70), Brittany Lang (70) and Colombia's Maria Jose Uribe (72) on 139, while Ochoa was in a group on 140 after a 69 at Guadalajara Country Club.

Shin can secure Player of the Year if she wins and Ochoa finishes eighth or worse.

Otherwise, the honor will be decided at the LPGA Tour Championship in Houston next week.

Nancy Lopez in 1978 was the only player to win both the rookie and player awards in the same season.

Shin took the outright lead on Friday with a birdie at 13, and added birdies on 14 and 15.

Wie's round was highlighted by an eagle on the 10th. She picked up three birdies after that, but gave back a shot at 17 where she missed a four-footer for par.