Shin 's ascension came after she won the Cyber Agent Ladies event on the Japan LPGA Tour .
2 May -- Jiyai Shin claimed the World Number One Ranking , surpassing Lorena Ochoa who had held the position for the previous 158 weeks .
Jiyai Shin 's ascension came after Lorena Ochoa won the Cyber Agent Ladies event on the Japan LPGA Tour .
2 May -- Jiyai Shin claimed the World Number One Ranking , surpassing Lorena Ochoa who had held the position for the previous 158 weeks .