Australia's Hannah Green has fired eight birdies on her way to a six-under-par 65 and a share of second place at the Walmart NW Arkansas Championship in Rogers, Arkansas.
Green sits in a group of nine players, one shot behind overnight leader Hae Ran Ryu of South Korea.
Ryu made five birdies in a six-hole stretch to rush out to the first-round lead, finishing with a seven-under 64 at Pinnacle Country Club.
