Ina Yoon leads the Women's PGA Championship by two shots after the first round as Nellie Korda's hopes of a third straight major falter.
Ina Yoon has never finished higher than fourth in a LPGA Tour event Women's PGA Championship first round -9 I Yoon (Kor); -7 K Davidson (Aus); -5 A Kim (Kor), A Pano (US); -4 A Krauter (Ger), H Choi