Canada's Naomi Ko advances in US Girls' JuniorTULSA, Okla. (AP) Canada's Naomi Ko won two matches Thursday in the U.S. Girls' Junior to advance to the quarterfinals at Tulsa Country Club. The 17-year-oldSI Staff|Share on FacebookShare on XAdd us as a preferred sourceCanada's Naomi Ko advances in US Girls' JuniorLoading recommendations... Please wait while we load personalized content recommendationsPublished Jul 24, 2015 | Modified Jul 24, 2015SI STAFFShare on FacebookShare on X