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 Friday 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 at 11-under 133.

"I don't know much (about) this course, so I try to just play safe," Shin said. "Like just the middle of the fairway, just the middle of the green and make it a very simple game. ... I have found my tempo - great tempo. So I have a really good feeling."

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.

"I'm OK," Ochoa said. "It was a better round today, but I'm still a little behind. I hope the weekend will be better."

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.

"I'm just focusing on the game this week and not thinking about that at the moment," Shin said.

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.

"I do feel really close," said Wie, who has yet to win on the LPGA tour but has two second-place finishes this year. "I feel like I need to shoot a lot lower and play a lot better over the weekend. But if everything works out, hopefully it will be the week."