Harrington had been vying for the lead with defending champion Craig Perks - playing his best golf for some time - and Davis Love III who hit five birdies in succession.

BBC: Harrington hits the front

He's been at the epicenter of the pro-golf world for a couple of decades, working with Davis Love III, Greg Norman, Fred Couples, Ernie Els, Adam Scott, and now Dustin Johnson, Nick Watney and Phil Mickelson.

WSJ: Golf Coach Butch Harmon Speaks Out on Tiger Woods, Hank Haney and Phil Mickelson | Golf Journal.

Rotella counsels amateurs--he helped Gary Burkhead, the 66-year-old retired chief executive of FMR, work his handicap down from the 20s to 4--but works mainly with 100 or so golf professionals, including Tom Kite, Ernie Els and Davis Love III.

FORBES: Magazine Article