Johnson rolled in two birdie putts over the closing holes at soggy Conway Farms and closed with a 6-under 65 for a two-shot victory over Nick Watney, giving him one of the top five seeds for the Tour Championship next week and a clear shot at the FedEx Cup and its $10 million prize.
His first win of the year came at the expense of Jim Furyk, who endured another dose of final-round disappointment.
Furyk’s victory drought is now at three years, and he has failed to win the last six times he had at least a share of the lead going into the final round. He lost the outright lead with a bogey on the 11th hole and then fell too far behind with two more bogeys in his round of 71. He wound up alone in third.
Watney started the week at No. 34 in the FedEx Cup. He closed with a 64, and his runner-up finish allowed him to join the 30 players who advance to East Lake next week, all of them with at least a mathematical chance at the $10 million bonus.
The points will be reset, meaning the top five only have to win the Tour Championship to capture the cup.
Tiger Woods will be the No. 1 seed, though he doesn’t go there with much momentum. Henrik Stenson, a winner in Boston and angry enough in Chicago that he snapped off the head of his driver during the final round, will be the No. 2 seed at East Lake, followed by Masters champion Adam Scott, Johnson and Matt Kuchar.