Poston corresponds to Trevino & # 039; 1974 feat with bogey-free tournament for first victory PGA Tour
Poston's previous best finish this year was sixth at the RBC Heritage in April, the final championship of the Wyndham Championship-22 JT Poston (US); -21 W Simpson (USA); -20 BH An (Kor); -19 V Hovland (Nor); -17 SW Kim (Kor) Selected others: -15 P Casey (Eng); -13 P Reed (US) Complete standings
The American JT Poston finished the Wyndham Championship without dropping a shot and secured his first PGA Tour title with one blow in North Carolina.
The 26-year-old world number 164 has carded an eight-under 62 to end 22 under.
Poston is the first player since Lee Trevino in 1974 to finish without bogey for 72 holes and win on the PGA Tour.
A Byeong-hin, who led after each of the first three rounds, started one forward the last day but the South Korean made two late bogeys in a 67 and finished third.
Englishman Paul Casey doubled bogey the 10th and finished seven shots back in joint 13th after a closing 69.
An, who was also looking for his first PGA title, had not dropped a shot during the tournament until he took an unplayable lie on the 15th and recorded a bogey six to slide two shots off the lead.
He rolled into a long birdie putt on the n ext but with Poston in the clubhouse one shot ahead, An found the trees at the latter and was faced with a 58-foot birdie putt to play a off, who cut off the pin but ran past when he took two more to finish.
Former US Open champion Webb Simpson poultryed four of the last five holes to finish second behind Poston, born in North Carolina.
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