Former Penfield High School and Duke University golfer Yaroslav Merkulov leads the RDGA after a first round 66.

Merkulov was four-under par on the front nine and eagled the par 5 10th. After Duke, he played on pro minitours before regaining his amateur status. He won the U.S. Open local qualifier at Deerfield in May.

Defending Champion Chris Blyth and Brandon Grzywacz both shot one-under 70 at Penfield Country Club. Jeff March is at even par.

For all the opening round scores, check the RDGA Leaderboard.