WASHINGTON: South Korean Kim Joo-hyung fired a stunning nine-under par 61 on Sunday to win the Wyndham Championship, his first US PGA Tour title, and secure his spot in the season-ending playoffs. Kim’s outstanding effort at Sedgefield Country Club, where the 20-year-old played the first nine holes of the final round in eight-under, capped a remarkable week that opened with his quadruple bogey eight at the first hole on Thursday. “It’s definitely a week I’ll remember forever,” Kim said after his 20-under total of 260 gave him a five-stroke victory over fellow South Korean Im Sung-jae and American John Huh.