Lydia Ko's tilt to win a third straight Canadian Open title has taken a hit, making the cut but 10 shots off the lead at halfway.
While improving today to a second round 69, one better than yesterday's 70, Ko is five-under par after 36 holes but with scoring extremely low at the London Hunt and Country Club in Ontario, the Kiwi teenager needs a blistering finish to the tournament if she is to defend the title for a second time.
Ko may also need some help from runaway leader So Yeon Ryu of Korea, who is five shots clear of the field after glittering rounds of 63 and 66.
After a frustrating day on the greens yesterday, giving herself birdie chances only to be let down by unusually wayward putting, Ko got off to a great start today, with birdies on two, seven, eight and 10 to be four under after the turn.
And while she added another birdie to the card on 16, a low round was blighted by bogeys at 12 and 18.
Heading into day three, Ko's five-under tally is good enough for a tie of 24th, the same spot she started the second round before falling back to 34th after completing her round.
At the top of the leaderboard, Ryu was again exemplary today - having posted the lowest-ever opening round in the tournament's history yesterday with 63.
Birdying three of the first four holes, the Korean also collected red figures on 12, 13 and 15 - and is yet to drop a shot all week.
Ryu is five shots clear of a three-way tie for second with American Danielle Kang, Swede Anna Nordqvist and Korean Na Yeon Choi all on 10-under.
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