Sebastian Munoz of Colombia made a 15-foot birdie putt on the 18th hole to force a playoff, and then beat Sungjae Im with a par on the first extra hole to win the Sanderson Farms Championship for his first PGA Tour victory. Munoz, who closed with a 2-under 70, made it two straight weeks for South American winners, following Joaquin Niemann winning last week at the Greenbrier. Niemann won by six shots at the Greenbrier. Munoz had it far more difficult. He was among four players in the mix over the back nine at the Country Club of Jackson. Im closed with a 66, and that looked like it might be enough. Byeong Hun An made consecutive bogeys to fall out of the mix. Carlos Ortiz couldn't get a putt to fall. The 26-year-old Munoz poured in the birdie putt at 18 to join Im at 18-under 270.