A pair of 66s saw Anna Grzebien and Meaghan Francella share the lead following the first round of the Hana Bank KOLON Championship.

American duo Grzebien and Francella did not drop a shot with the latter picking up five of her six birdies over her final nine holes.

"I didn't hit the ball that great," said Francella. "I had the lefts going a little bit with my tee shot, so I scrambled a little bit on the front and shot one under.

"Then I just kind of played what I had on the back and I was able to shoot five-under. Overall I putted really well, so that saved me."

Grzebien said: "I was just steady all day. Obviously if you make no bogeys then you're just kind of playing the course right.

"I was conservative when I needed to be and being aggressive on some of the pin placements allowed me to do that. I just felt confident with the putter."

The duo head a group of six players by one shot which includes Scotland's Catriona Matthew and LPGA Tour rookie Vicky Hurst, who recorded a hole-in-one at the 175-yard par-three 12th.