David Carey was unable to advance to the Final Stage of Korn Ferry Qualifying School after missing out on the top-18 at the Second Stage at the Plantation Course in Florida.
Carey entered the final round four shots off the cut off mark but a two-over 73 saw him tumble down the leaderboard and miss by a distant eight shots on five-under-par.
The Darwin Escapes professional started his final round as he did his third with birdies at the first and fourth holes before a bogey, birdie run before the turn saw him complete his front nine in 33 and leave him with a fighting chance on his journey to the clubhouse.
But that journey to the house was a torrid one as his challenge fell flat on its face midway through the back nine as he dropped a whopping five shots in three holes.
Successive double bogeys on the 12th and 13th put paid to his slim chances of breaking into the top-18 on the leaderboard and a bogey on 14 added insult to injury.
The 26-year-old who was an unlikely qualifier for the 150th Open Championship before finishing a credible 62nd birdied the 18th to finish in a disappointing 49th place.
Julian Etulian topped the leaderboard on nineteen-under alongside Curtis Luck.