Angelo Que and Miguel Tabuena settled for joint 64th at the close of the International Series Korea Championship at the Lotte Skyhill Club in Jeju, South Korea.
Que came undone by three double bogeys and limped home in six-over-par 78 while Tabuena finished with a 70 behind four birdies against two bogeys.
Both Filipinos finished the 72-hole event on 2-over, 17 shots behind Korean winner Taehoon Ok who closed with a 68.
Bio Kim, another Korean, finished one stroke behind on 14-under after a 68.
American Trevor Simsby shot a 67 to take third place on 13-under.