Canadian lefthander Mike Weir fired a course record-tying 10-under-par 62 for a two-shot lead after the first round of the PGA Tour's Genuity Championship in Miami, Flordia on Thursday.
Weir made two eagles en route to a blistering 29 on the front nine.
Glen Day and Stewart Cink also played bogey-free golf, but finished two shots off the lead after each posted eight birdies for an eight-under 64.
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