Australian Rhein Gibson fired a round-best five-under 65 on Sunday, but it wasn't enough to make up for a dismal second round at the Web.com Tour Championship.
Gibson fired under a seven-under 63 on Thursday to take an early lead in the event, but fumbled through a second round which included eight bogies on Friday.
He now sits in a five-way tie for 12th, seven shots behind Argentina's Emiliano Grillo.
Fellow Aussies Robert Allenby and Rod Pampling are four shots further back in a tied for 39th, while Aaron Baddeley had an horrific Sunday, hitting a three-over 73 to sit in 61st.
The tournament is the fourth and final event in the series for the top 75 players from the Web.com Tour money list, Nos. 126-200 in the PGA Tour's FedEx Cup standings and non-members such as Grillo who earned enough money to have placed in the top 200 had they been eligible to receive points.
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The top 25 players on the Web.com Tour regular-season money list earned PGA Tour cards. They are competing against each other for tour priority, with regular-season earnings counting in their totals. The other players are fighting for 25 cards based on series earnings.
