Edwards carded a course-record, 9-under 63.
"I was in the first group off and got off to a good start," said the 50-year-old Edwards, four-time winner on the PGA Tour. "The greens were perfect. I feel like I'm playing better lately. I got quite a bit out of my round."
Bryant, a two-time winner and two-time runner-up this season, moved near the top of the leader-board with birdies on four of his first eight holes.
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