( CNN ) -- Lexi Thompson struggled to describe her delight after she won the Navistar LPGA Classic on Sunday to become the female golf tour 's youngest-ever winner . Thompson 's five-shot triumph at the Robert Trent Jones Trail 's Capitol Hill Senator Course -- aged 16 year , seven months and eight days -- beat the record previously held by her fellow American Marlene Hagge . `` It feels amazing , '' Thompson told the Tour 's official website . `` I ca n't even describe it . It 's been my dream my whole life just to play out here . Getting a win right now , I ca n't describe the feelings , but it 's the best feeling ever . '' The Florida resident , who became the youngest player to qualify for the women 's U.S. Open in 2007 at the age of 12 , finished 17-under-par after carding a final round of 70 to beat off competition from compatriot Tiffany Joh . Thompson was accompanied on the course by her father and caddy Scott , and the world number 124 said it was an emotional experience to walk up the final fairway with her Dad . `` I loved it , '' she said . `` Just being there with my Dad , he was like , 'Lexi , just enjoy that walk . I am going off to the side because I might cry . ' `` You know , I definitely cried after I finished . Just finishing that with my dad on the bag , it was the best experience . I would n't be out here without my Dad and my Mom , of course . '' Thompson received a check for $ 195,000 for her historic win , and the youngster pledged to donate $ 20,000 to the Wounded Warrior Project -- the tournament 's official charity , which helps wounded members of the Armed Forces . `` Well , I think they deserve it , '' said Thompson . `` They give up their lives for us , you know , saving our country . I wore the pin every day . `` Donating to them , just you have to . I mean , look what they do for us . It 's just amazing that they do that . I definitely want to give back . '' Angela Stanford finished in third position , one shot back from Joh , with the U.S. 's Brittany Lang and Karen Stupples of England tied for fourth position on 10-under .
Lexi Thompson becomes the youngest-ever winner on the LPGA Tour . The 16-year-old clinched a five-shot victory at the Navistar Classic . Hide Caption 1 of 11 Photos:Photos: Young winners in golf history