a three-stroke deficit to Japan 's Ai Miyazato to eventually finish three shots ahead of the former world Stacy Lewis is the new women 's world No . 1 after winning Founders Cup . Lewis is only the seventh woman to occupy the position and the second American . Lewis underwent back surgery for cancer 10 years ago . Previous No . 1 Yani Tseng had topped the rankings for 109 weeks .
Stacy Lewis is the new women 's world No . 1 after winning Founders Cup . Lewis is only the seventh woman to occupy the position and the second American . Lewis underwent back surgery for cancer 10 years ago . Previous No . 1 Yani Tseng had topped the rankings for 109 weeks .