If Kerr wins, she moves to No. 1 as long as Tseng finishes worse than a tie for 11th.
If Pettersen wins, she moves to No. 1 as long as Tseng finishes worse than a tie for 19th with four other players.
Tseng is holding the No. 1 ranking for a 19th consecutive week, the longest run since Lorena Ochoa retired and lost the top ranking in the spring of last year. Jiyai Shin has been No. 1 the most weeks (25) since Ochoa’s retirement, but her longest run was 15 consecutive weeks. Ai Miyazato was No. 1 for a total of 11 weeks, Kerr for five weeks.