VANCOUVER – Lydia Ko refused to let a late bogey ruin her round as the teenage phenom fired a three-under 69 to take a share of the 54-hole lead at the Canadian Women's Open Saturday. She was the frontrunner for most of the third round and could have had sole possession of the lead heading into Sunday's final round, but a bobble at 18 snapped her string of 46 holes without a bogey. Ko sank four birdies Saturday as she boosted her chances of winning a third title in four years at this event and finished at 12-under 204 to become the co-leader with Taiwan's Candie Kung, who fired a 71. American Alison Lee matched the low round of the day with a six-under 66 to take sole possession of third place at 10 under. Karine Icher of France carded a par 72 and was alone in fourth at nine under.