"I had a few scars from a few weeks ago," Leishman said. "I was just really, really determined to not let that happen again. Got it done."
And it was never really close.
Rose is the only player who got within two shots of the lead, only for Leishman to answer with a 30-foot birdie putt on the 15th hole and a 10-footer for birdie on the 16th. Rose closed with a 65.
Fowler made a late run when he was too far back, and he needed one more birdie on the 18th to grab the No. 5 seed for the FedEx Cup finale next week at the Tour Championship. He ripped driver off the fairway and over the stream to the back rough. It was a bold play that preceded a pair of meager efforts - a chip that came up 25 feet short, and a birdie putt that didn't to the hole. He closed with a 67.
Jon Rahm birdied four of his last five holes for a 67 and will be the No. 5 seed.
Jordan Spieth shot 65 to tie for seventh and kept the No. 1 seed, followed by Justin Thomas, Dustin Johnson, Leishman and Rahm. The points are reset to give all 30 players at East Lake a mathematical chance, but the top five seeds only have to win the Tour Championship to capture the FedEx Cup.
As usual, the only drama at Conway Farms was who made it to East Lake, and a pair of PGA Tour rookies delivered.
Xander Schauffele, who won The Greenbrier Classic in July, opened with 10 pars and two bogeys and was not even in the picture until the San Diego native played his final six holes in 6-under par, including a 30-foot eagle when he drove the green on the par-4 15th.
Patrick Cantlay fell out of the top 30 when he took bogey on the 16th hole. Needing a birdie to get into the Tour Championship, he hit a hybrid onto the green to 50 feet, left his eagle attempt some 10 feet short and calmly holed the putt to get in.
Cantlay returned to golf after a three-year break from a back injury that nearly ended his career, and the death of his close friend and caddie, Chris Roth, who was hit by car as they walked to dinner. The former UCLA star made it to the Tour Championship despite playing only 11 events this year. Being in the top 30 gets him into the Masters, U.S. Open and British Open next year.
Masters champion Sergio Garcia injected more drama than necessary. He figured he needed a par on the final hole to get into the top 30 when a bogey would have worked. His second shot was on the rocks in the stream, and after taking close to 30 minutes on a drop, he smacked it over the green into the grandstand, got more relief, and then got up-and-down for his par.
Phil Mickelson wasn't so fortunate. He made three bogeys on the front nine and tried to get back in the game with an eagle on the reachable par-4 15th. Needing an eagle on the 18th hole to make it to East Lake, Mickelson's 140-foot pitch-and-run hit the hole and popped out. After the 30-minute wait on Garcia.
Leishman earlier this year won the Arnold Palmer Invitational at Bay Hill. The third victory of his tour career was by far the biggest, and went far beyond the strong field, the US$1,575,000 paycheck or his standing in the FedEx Cup.
Leishman pegged this event as a chance to spread awareness for sepsis and toxic shock syndrome, which nearly killed his wife two years ago. He asked the players to wear ribbons on their caps this week to celebration Sepsis Awareness Month. And then he went wire-to-wire, walking off the 18th green to see his wife, Audrey, and their three young children.