OTTAWA, Aug. 14 (UPI) -- World No. 1 Lorena Ochoa topped the leader board with a first-round 6-under-par 66 in the Canadian Open Thursday, one shot ahead of No. 2 Annika Sorenstam.
Se Ri Pak, Nicole Castrale, Hee-Won Han and Meena Lee were tied for third place at 4-under 68.