Top-seeded Na Yeon Choi of South Korea will face No. 3 Suzann Pettersen of Norway in the other semifinal Sunday morning at Hamilton Farm Golf Club.
The championship in the $1.5 million tournament will be decided Sunday afternoon, with Stanford looking to reach the final for the second straight year. She lost to Sun Young Yoo last year.
Kerr, the No. 3 seed who hasn’t played more than 16 holes in any match, beat Ai Miyazato, 3 and 2. Choi beat Sophie Gustafson 2-up, and Pettersen holed an 8-foot birdie putt on No. 18 to edge top-ranked Yani Tseng 1-up.
In the third round in the morning, Gustafson beat Michelle Wie 1-up.