( CNN ) -- Yani Tseng 's two-year reign at the top of women 's golf is over . Five-time major winner Tseng has been at the top of the Rolex World Rankings since February 2011 , but the Taiwanese star has finally been usurped by American Stacy Lewis . Lewis produced an eight-under-par final round of 64 to clinch the Founders Cup in Phoenix Arizona , just two weeks after winning the HSBC Women 's Champions event in Singapore . The Ohio native is only the second U.S. player to occupy the coveted berth after Cristie Kerr also reached the top in June 2010 . Lewis clawed back a three-stroke deficit to Japan 's Ai Miyazato to eventually finish three shots ahead of the former world No . 1 . The final round 's 16th hole proved decisive , with Miyazato slipping and allowing Lewis to take control . `` It 's awesome , '' Lewis told the LPGA Tour 's official website when asked about the win . `` I played great today . Myself and Ai we just went back and forth all day ; she was making putts , I was making putts . `` I was certainly surprised she finished the way she did , but to make those two putts I did on 16 and 17 was pretty unbelievable and I 'm just really speechless . '' If Lewis ' fightback at the Wildfire Golf Club journey was stirring , it is nothing compared to the story of her rise to the top . A decade ago the 2011 Kraft Nabisco Championship winner underwent surgery for scoliosis , following a childhood plagued by back problems . `` Yeah , it 's almost 10 years ago I was having surgery , I was going into surgery to put a rod and five screws in my back , '' added Lewis . `` That 's not normal , that 's not supposed to happen . I mean , I 'm not really supposed to be here . `` I know that there 's a reason and I know that everything happens for a reason . Every setback you have along the way , everything good that happens , it all happens for a reason . `` I could n't have dreamed the kid growing up wearing a back brace 18 hours a day that is the No . 1 player in the world . I do n't know , I do n't know what to say . '' Lewis is the seventh player to top the rankings . Tseng , Kerr , Miyazato , Mexico 's Lorena Ochoa , Sweden 's Annika Sorenstam and Jiyay Shin of South Korea are the only other golfers to have held the distinction .
Stacy Lewis is the new women 's world No . 1 after winning Founders Cup . Lewis is only the seventh player to occupy the position and the second American . The first was Jennifer Capriati in 2003, who won her third consecutive title at the U.S. Open. Previous No . 1 Yani Tseng had topped the rankings for 109 weeks .