Dustin Johnson started the week at 10 under as the top player of the Tour Championship -21 D Johnson; -18 X Schauffele, J. Thomas; -17 J Rahm (Spa); -14 S Scheffler; -13 C Morikawa; -12 T Hatton (Eng); -11 R McIlroy (NI), P Reed, S Munoz (Col)
Dustin Johnson, number one in the world, claimed a victory with three shots at the PGA Tour & # 39; s Seasonal Tour Championship.
The 36-year-old American had a five-stroke lead on his way to Monday's final round at East Lake, taking a two-under-68 to claim the $ 15 m FedEx Cup jackpot.
It's a first FedEx Cup title for Johnson, who lost a chance to win in the final round four years ago.
Countrymen Justin Thomas and Xander Schauffele each reached a final lap 66 to finish second at 18 under.
Johnson told the Golf Channel, "This is a tough course so no conduit is really safe. I knew I had to come out and play really well.
"I got off to a really good start, missed a few putts at the back but hit the fairways when I had to cover the part. The boys fought me well today.
"I wanted to be a FedEx Cup champion, it is something in my career that I would like to be and I am very proud of the way I have played, especially during the last four tournaments. "
Former US Open Champion Johnson kept his overnight advantage after six holes, but shot consecutive bogeys at seven and eight to give Thomas and Schauffele hope.
Thomas applied the pressure with five birdies on his outer nine, as both he and Schauffele briefly came within two of the lead during the day.
Johnson, the first player to have had a 54-hole lead in four consecutive stroke play events since Tiger Woods in 1999, got his nerve and sealed the title with a bogey on the last .
American PGA winner Collin Morikawa made a final lap 69 to finish sixth on 13 under, one shot ahead of England's Tyrrell Hatton.
Northern Ireland defending champion and four-time great winner Rory McIlroy was one shot further back at 11 bottom.
How the Tour Championship Works [1 9459045]
Johnson started the Atlanta event with 10 under par as the Tour Championship's top-placed player.
Players at the event are disabled based on FedEx Cup points earned during the season and the top 30 in the rankings compete for the Tour Championship.
The player with the highest ranking starts the tournament with 72 holes at 10 below par, while the second placed starts at eight below.
The third seed leaves at bottom seven and so on to the fifth seed at bottom five. Seeds 6-10 start at −4; seeds 11-15 start at -3; and so on, up to seeds 26-30, starting at level par.