Miyazato finished with a 67

``Of course, Yani is No. 1, so I knew it wouldn't be easy today,'' Miyazato said. ``I kind of expected her to play that way.''

South Korea's Jiyai Shin, tied for the lead with Tseng after a birdie of her own on the par-4 17th, had a 67 to finish two strokes back.

Tseng eagled the par-5 opening hole and Miyazato had a birdie, leaving them tied at 15 under. Tseng took the lead with a birdie on the par-4 third, and added birdies discount golf clubs on the par-4 sixth and par-5 seventh. At the turn, she had a three-stroke lead over Shin and four-shot advantage over Miyazato.

``I played really well on the front nine, but it was tough on the back nine, especially when you see Jiyai and Ai keep making TaylorMade RocketBallZ Driver birdies,'' Tseng said. ``It got tight down the stretch. It was tough. I feel like I had lots of emotions today.''

Shin, playing a group ahead of Tseng and Miyazato, birdied the par-4 10th to pull within two and gained another stroke when Tseng bogeyed the hole. Tseng pushed her lead to two with a birdie on the par-3 12th, but bogeyed the par-4 13th.

Miyazato birdied the 10th and pulled within TaylorMade RocketBallZ fairway wood one of Tseng with a birdie on the par-4 15th, then matched Tseng with a par on 16 and the birdies on 17 and 18.

``Overall, I played really well and I'm very happy that I could finish strong today,'' Miyazato said. ``I really enjoyed playing with Yani, but next time I want to win.''

South Korea's Amy Yang shot a 69 to finish fourth at 14 under.

Sixteen-year-old Thai amateur Ariya Jutanugarn followed her third-round 65 with a 74 to tie for 12th to 7 under. She played the final five holes in 4 over, making a double-bogey 7 on No. 18. Last year, Jutanugarn won the U.S. Junior Girls' Championship and was the Rolex Junior Player of the Year.