Ai Miyazato of Japan has won her third tournament of the LPGA season

Ai Miyazato of Japan has won her third tournament of the LPGA season, shooting a 6-under 67 to win the Tres Marias Championship.

The Japanese totaled 19-under 273 on Sunday to finish a shot ahead of Stacy Lewis (66) of United States and two in front of Michelle Wie (68).

Miyazato shared the spotlight with Lorena Ochoa, who played the final round of her career before stepping into retirement to raise a family and focus on her charity foundation. Ochoa shot 71 to finish on 280. She has won this event three of the past four years.

Ochoa has held the No. 1 ranking since April 2007 but she will lose it when the rankings come out Monday, with Jiyai Shin of Taiwan taking over. Shin won a tour event in Japan on Sunday.