17-year-old golfer Lydia Ko already looking to retirementMELBOURNE, Australia (AP) Only 17, top-ranked Lydia Ko says she's already planning to retire from golf by the time she's 30, and become a psychologist. KoSI Staff|Share on FacebookShare on XAdd us as a preferred sourceAdd us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Feb 18, 2015 | Modified Feb 18, 2015SI STAFFShare on FacebookShare on X