That shot – to tap-in range to set up an eagle and T4 finish at the US Open - triggered a chain reaction which ended up with Smith playing the PGA Tour.
Fast forward three years and Smith played another extraordinary second to a par-5 today, this time at TPC Boston to set up yet another eagle chance.
Again it was the 18th - though in this case just the 54th hole – but this time the eagle putt refused to drop.
Instead of 66 and a share of second Smith signed for a 67 and T4 with 18 holes to go.
However, he will be among the players to watch Sunday at the second FedEx Cup play-off event where he would love nothing more than to claim a maiden individual PGA Tour title.
Smith has an official win on his resume, lifting the trophy at the 2017 Zurich tournament in New Orleans, but that event was a team competition.
The reigning Australian PGA champion will look to rectify that when the tournament finishes Monday US time, his play the past two weeks suggesting he is a legitimate chance to do so.
The stakes are higher than just the Dell Technologies trophy, however, with the $10 million bonus for the FedEx Cup in calculations if Smith gets across the line tomorrow.
The 25-year-old has shown he has the nerve for the big stage and at just two shots behind leader Abraham Ancer and one back of overnight leader Tyrrell Hatton and last week’s winner Bryson DeChambeau he will fancy his chances.
Statistics suggest all parts of his game are in good shape and he will take plenty of confidence to the first tee.
Smith is Australia’s best chance though Marc Leishman could also challenge for the title if he can produce something special in the final round.
The Victorian signed for a 2-under 69 Sunday to be 8-under and five off the pace though not out of calculations completely.
Adam Scott was the only other Australian to make the cut but at 2-over won’t be a legitimate chance tomorrow though will be motivated to go low and move up the FedEx Cup standings.
He is currently projected to be 50th on the list but will be looking to climb into the top 30 and book a place in the Tour Championship in Atlanta.
Smith and Jason Day are assured of a place at East Lake while Leishman looks a near certainty, Scott keen to make it four from four among the Australians.
GEORGIA HALL - 'CHIP LIKE TIGER':
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