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American Scott Piercy recorded two eagles en route to a course record 8-under 62 and a one-shot lead after the opening round of the Canadian Open at the Hamilton Golf course.
William McGirt, of the United States and England's Greg Owen, were a stroke back at seven-under 63 and Robert Garrigus shot a 64.
Charl Schwartzel was part of a group of 7 golfers at 65 and British Open champion Ernie Els had to settle for a 2-over 72.
