Australian teenager Ryan Ruffels has vowed to learn from his final-round fadeout at the Canadian Open.
The young Victorian started the final round T5 and three off the lead as he seeks a path towards a US PGA Tour card.
But back-to-back bogeys on the 3rd and 4th holes at the Glen Abbey Golf Club near Toronto forced him from his comfort zone and he eventually signed for a 76 and a share of 32nd place.
Venezuelan Jhonattan Vegas defended his title with a stunning final-round 65 to ultimately edge American Charley Hoffman in a playoff at 21 under.
But for Ruffels, who began his day at 14 under, another three bogeys and two double-bogeys as he pushed harder in the chase proved his downfall.
A quality pitch inside 1m set up a birdie on the 13th, but by the time he gathered a head of steam, his chance had gone.
The dual Australian junior champion drilled a spectacular approach to 1.5m on the par-five 16th and holed his eagle chance, then birdied the 17th from close range and hooked out with an eagle chip from the fringe on the 18th to pick up four shots in the final 20 minutes to reach 10 under again.
But, when every stroke takes on additional pressure in the formative stages of his career, the 19-year-old knew the horse had bolted.
"Not my day, but the support was amazing from all around the world!" he later tweeted.
"Career lessons learned and I'll be better for it when I'm there again."
It wasn't a great day all round for the Aussie contingent with Cam Percy firing 73 to finish T70 at three under and Brett Drewitt fading with a 77 to finish 76th at one over.