Ryu storms five shots clear
So Yeon Ryu stretched her lead to five strokes at the halfway stage of the LPGA Canadian Women's Open.
The South Korean fired a six-under par 66 in Friday's second round at the London Hunt and Country Club after breaking the course record with a 63 on Thursday.
Ryu, who had 10 top-10 finishes without a victory last year and has nine more this year without lifting a trophy, birdied three of the first four holes to pull away after carrying a one-shot lead into the round.
The 2011 US Women's Open champion stands on 15-under par, five clear of compatriot Na Yeon Choi, America's Danielle Kang and Anna Nordqvist of Sweden.
"After I shot nine-under, six-under is not that great, but still it's a really great score and I made a lot of great putts," Ryu said.
"I had a bogey-free round two days in a row, so I feel really great about that.
"That's my goal. I aim for a bogey-free round all four days and I'm aiming for a really good win.
"A lot of birdies still this time, but no bogeys is still more a great sign because it means I've played really consistent.
"When I was in trouble, I proved I can prove it with a bogey-free round, so I'm more happy with a bogey-free round."
Nordqvist fired a 69 but fell back with her first bogey of the event at the par-five 16th as playing partner Ryu seized command.
She said: "I was trying to keep up with her on the greens. I played really well too. Just couldn't seem to make any putts.
"I burned six or seven edges so it was a bit frustrating, but she played really well and I tried to feed off her."
Choi had a bogey at the fifth and a birdie at the par-5 seventh, then began the back nine birdie-bogey before back-to-back birdies at 15 and 16 gave her a 70 for the round.
Two-time defending champion Lydia Ko of New Zealand fired a 69 to stand on 139, 10 strokes off the pace.
The teenager from New Zealand was an amateur when she took the past two editions of the tournament but is now in her rookie season on the LPGA circuit.