Rose, the 54-hole leader, shot 3-under 67 and had a 15-footer for par on 18 that would have given him the win.
However, a steady round proved not enough around a soaked Aronimink, with McIlroy's two-under 68 bettered by Rose, who shot a three-under 67, and eventual victor Bradley, whose six-under 64 took him into a play-off with the Englishman. Webb Simpson and Tiger Woods finished in a tie for sixth place, one shot behind McIlroy. As the ninth-ranked golfer in the world, he is one of the top players on tour week to week when healthy, so he was a favorite to be the overall playoff champ if he had played in all the events.
"To make the Ryder Cup team and get back to East Lake, that was a pretty big goal at the beginning of the year, and to be able to accomplish that is something I'm very proud of".
The final round was played on Monday after persistent rain left the course unplayable on Sunday.
One of the traits that makes Fowler a great golfer, is his ability to get so much distance off the tee with the awesome amount of hip and shoulder turn he creates.
Bradley was a former user of the long, anchored putter and used it to win the 2011 PGA Championship - before anchoring the club to the body was outlawed by rulemakers in 2016.
Fowler told ESPN early this week that his injury might have been a blessing in disguise because it gave him a chance to rest during one of the most hectic times of the season.
Woods caused some more noise - he's been doing that a lot in recent months before the largest galleries at every course - and got within one shot of the lead when he birdied the par-5 ninth to go out in 31.
Such was the scoring at Aronimink that Woods had a 72-hole score of 263 for the sixth time of his career. "I'd hate to round off the season with three seconds, but that could be good enough next week, you just never know". That projects him to move up 22 spots into the 30th position in the FedEx Cup, which would bump out Jordan Spieth.
Woods, coming back from injury, made the Tour Championship for the first time since 2013.
"I'm glad it's over", Matsuyama said. That was about the time he was just starting to cope with back pain.
That means he will have played only 24 tournaments this year, which includes the Ryder Cup.
By this stage Bradley was making his charge at 18-under for the tournament, while playing partner Rose was stretching away at the same mark and Xander Schauffele had moved one ahead.