Thanks to an eagle, birdie finish, for an eight-under-par round of 64, Ireland's Leona Maguire finished the second round of the Meijer LPGA Classic on 15-under, giving her a three-shot advantage over Australia's Su, in Blythe, Michigan, USA. A shot behind Oh is American Lindy Duncan, and one short further back are four of her compatriots, Brittany Altomare. Lisette Salas and Nelly Korda, and Mina Harigae, along with Sweden's Anna Nordqvist.