Australian Minjee Lee sits five shots behind Dane Nicole Broch Larsen, who shot her second consecutive six-under 66 to lead at the halfway point of the LPGA's Canadian Open in Aurora.
Lee is leading the Australian contingent after she backed up her opening round 69 to shoot 68 and end day two at seven-under at the Magna Golf Club.
Compatriot Su Oh suffered a late capitulation, highlighted by a double bogey on the 17th, to drop from her second-round peak of eight-under to end the day at five-under. Sarah Kemp (two-under) was the only other Australian to survive the cut.
Broch Larsen, who started on the back nine, birdied three of her last four holes to push ahead of top-ranked Jin Young Ko and post 12-under 132 at Magna Golf Club.
Ko shot a bogey-free 67 and sits one shot behind Broch Larsen, who is actually winless in three seasons on the LPGA Tour and came in 89th in the points standings.
Defending champion Brooke Henderson of Canada was three shots back after a 69 along with Pajaree Anannarukarn (69) and Yu Liu (67). Amy Olson had a 68 and was another shot behind at eight-under.