CHICAGO (Ticker) -- Ted Goin produced his round of the year Friday to move to the top of the leaderboard at the SBC Senior Open.

Goin fired a bogey-free 6-under-par 66 at the Harborside International Golf Center for a one-stroke lead over four players, including three-time champion Hale Irwin.

A 52-year-old Florida native in his second year on the Senior PGA Tour, Goin birdied the final two holes to complete his best round since a career-best 64 at last year's TD Waterhouse Championship. He also shared the first-round lead at the Senior PGA Championship, where he ended up tied for 60th.

Irwin, whose week began amid controversy, capped a 67 with birdies on three of his last four holes and is tied for second with Tom Wargo, Roy Vucinich and Bob Eastwood. Seven players are two shots back, including Jim Colbert, Jay Sigel and Doug Tewell.

Defending champion Dana Quigley struggled through his worst round of the year, a 6-over 78 that left him 12 strokes off the pace.

A par-72 layout measuring 6,970 yards, Harborside is hosting this tournament for the first time. Irwin won this event in 1995 at the Stonebridge Country Club, then claimed back-to-back titles in 1998-99 at the Kemper Lakes Golf Club.

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