Rory McIlory closed with a 5-under 67 on Sunday to rally to win his second straight FedExCup Playoff title at the BMW Championship.
McIlroy, who won the Deutsche Bank Championship last week by a stroke, finished at 20-under-par 268, which was good for a 2-stroke win.
The PGA Champion won for the fourth time this season and sixth time in his PGA Tour career.
"I felt like I was a little bit more on my game last week, I scrambled really well yesterday to still give myself a chance going into today, and I did some great work on the range last night, and drove the ball beautifully today," McIlroy said in a televised interview. "I set myself up to attack these pins."
Lee Westwood carded a 3-under 69 to finish alongside Phil Mickelson in second place at minus-18. Mickelson posted a 2-under 70 in the final round and heads to the Tour Championship ranked fourth on the FedExCup points list.
The top five on the points list would win the FedExCup with a win at the Tour Championship, regardless of what anyone else does in two weeks at East Lake.
Tiger Woods (68) and Robert Garrigus (69) shared fourth at 17-under-par 271. Adam Scott and Dustin Johnson both carded 70s on Sunday and they tied for sixth at minus-16 at Crooked Stick.
Vijay Singh, who shared the third-round lead with Mickelson, stumbled to a 1- over 73 to end alone in eighth at minus-15. Singh bogeyed three of four holes from the 14th and that dropped him down the leaderboard and cost him a spot in the Tour Championship as he ended 33rd on the points list.
McIlroy stuffed his approach at the second within two feet and kicked that in for birdie and a share of the lead. After Mickelson regained the lead, McIlroy birdied the fifth to again move into a tie atop the leaderboard.
After three straight pars, McIlroy birdied the ninth to join Westwood in the lead at 18-under. The Ulsterman made it two in a row as his 4-foot birdie putt found the bottom of the cup at the 10th, and that moved McIlroy into the lead by himself.
McIlroy parred four in a row from the 11th. Westwood birdied the 13th from 14 feet out to tie his playing partner in the lead, but the Englishman stumbled to a bogey at 14 to slip one back.
After his run of pars, McIlroy pulled away. He 2-putted for birdie from 14 feet at the par-5 15th, then rolled in a 13-footer for birdie at 16 to go three clear of the field.
McIlroy missed the green at 18 and that led to a closing bogey. He went to the clubhouse two clear of Westwood, who was done, and Mickelson, who was standing in the 18th fairway.
Mickelson needed to hole his second shot for eagle to force a playoff. However, his approach ended some 22 yards from the hole left of the green. That gave McIlroy his second straight title.
"I knew if I played to my ability that I would win events. I didn't think that everything would happen so quickly, but I'm just on a great run at the minute and trying to keep that going for as long as possible," McIlroy said on television.
Woods was the last to win two straight weeks and he did so at the Buick Open and the WGC-Bridgestone Invitational.
McIlroy will head to the Tour Championship in two weeks for the first time and he will do so as the leader in the race for the FedExCup.
Westwood traded a birdie for a bogey from the second. He had three birdies from the fifth to the ninth, but played the back nine in even-par to end two back.
Mickelson had three birdies and a bogey on the front nine and made the turn one shot out of the lead. He carded bogeys at 12 and 17, with consecutive birdies at 15 and 16 mixed in between.
"I was just a fraction off today, but I'm really pleased where my game is overall," Mickelson said.
Woods, who has won this event five times, birdied the second to get within two, but that was as close as he got all day. He tripped to a bogey at the sixth, but erased that error with a birdie on No. 8. Woods had three birdies from the 12th to the 16th to move to 17-under, but he parred the last two to end there.
Bill Haas struggled to a 6-over 78 to slide into a share of 45th at 3-under- par 285. With that, he also fell out of the top 30 on the points list, meaning he won't defend his Tour Championship or FedExCup titles in two weeks. He becomes the fifth straight FedExCup champion that will not defend his title.
NOTES: McIlroy earned $1.44 million for the win...Kyle Stanley, Ian Poulter, Graeme McDowell, Padraig Harrington and Singh were among those that failed to qualify for the Tour Championship, which will be played in two weeks at East Lake.