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|Canada's Naomi Ko advances in US Girls' JuniorShare on FacebookShare on XAdd us on Published Jul 24, 2015SI STAFFShare on FacebookShare on X