Hyo Joo Kim (Kor) -7; Lydia Ko (Nzl), Cristie Kerr (US) -6; Q Baek (Kor), So Yeon Ryu (Kor) -5

England's Florentyna Parker tied 6th at -4 after her round of 68

Inbee Park (-3) looking for her 7th major victory after last month's PGA Championship win

Four-time major winner Laura Davies shoots a level-par 72