A hole-in-one helped J B Holmes extend his lead to five shots ahead of the final round of the WGC-Cadillac Championship at Trump National Doral.
Dustin Johnson was the first player to ace the par three fourth hole on Saturday, holing out with a seven iron from 207 yards to make amends in style for dropping a shot on the second.
And amazingly overnight leader Holmes then repeated the feat just two groups later, using the same club to hole out in a near-identical manner as his ball landed around 20 feet short of the pin and rolled into the cup at the perfect speed.
That gave Holmes a five shot lead for the first time and although that was eventually cut to one due to bogeys on the seventh and 12th coupled with three more birdies from Johnson, Holmes responded superbly.
Birdies on the 14th, 15th, 16th and 17th took the 32 year old six shots clear before a bogey on the 18th meant he had to settle for a 70 to finish 11 under, five ahead of Johnson and double Masters Tournament champion Bubba Watson, who holed a bunker shot on the last in his 70.
“It was a lot of fun,” said three-time US PGA Tour winner Holmes. “I had a great time out there and just enjoyed playing a difficult golf course and enjoyed the challenge; it was definitely hard.
“You've got to think your way around the golf course, and it's really a ball-striker's golf course.
“I'm just going to go out tomorrow and control what I control and do my routines and have fun and whatever happens, happens.”
Johnson, who is playing his third event following a six-month absence said: "I was not aiming right at the flag. I pushed it a hair but it was still a really good shot obviously and got lucky it rolled right in.
"I should have made a few more birdies than I did but this golf course is tough so I'll go out tomorrow, get some pressure on JB early and you never know what will happen."
Sweden's Henrik Stenson leads the European challenge on four under par alongside former Open Champion Louis Oosthuizen, with Lee Westwood and Sergio Garcia another shot back.
Westwood, who carded six birdies and four bogeys in his 50th World Golf Championships event, said: "I think 70 is a pretty good score. I made a couple of mistakes out there. I hit a lot of good shots though and didn't get rewarded for some of them.
"I'm trying to keep myself in shape at the moment. I'm 42 in a couple of months but I still really feel fit and fresh and mentally sharp and keen to keep playing. As long as I am enjoying getting out of bed and practising and working on my game there's no reason I shouldn't carry on."
World Number One Rory McIlroy is ten shots off the lead after a 72.
