In fact, considering Sunday's script with both would-be Ryder Cuppers in the mix well past the end of regulation maybe the PGA of America/Ryder Cup task force should have saved two picks for after East Lake.
Kevin Chappell hung around all day to get in a three-way playoff at the Tour Championship.
While it was Graeme McDowell who took McIlroy under his wing at Celtic Manor, and then McGinley who inspired him two years ago, it is Clarke who McIlroy has always looked up to.
Five dropped shots in two holes saw Scott plummet to 3-over, effectively ending his hopes of FedEx Cup glory.
Moore battled Rory McIlroy in a dramatic playoff Sunday before falling on the fourth extra hole, giving the European star the $1.5 million top prize at the Tour Championship in Atlanta and the $10 million season playoff bonus.
The birdie left him and Moore on -12 while, behind them, Chappell, playing alongside Johnson, bogeyed the 17th, only his third of the week. Players who made the 30-man field at East Lake are exempt into the Masters, U.S. Open and British Open next year.
Moore, also in the FedExCup hunt, said it would be important to focus on golf and put the possible playoff scenarios out of his mind.
But as he has done for much of 2016 Johnson produced his best golf when he needed it most, bouncing back immediately to make a closing birdie on the par-5 18th and square the ledger with his fellow American.
Nothing was sweeter than No. 16.
"I like my position", Johnson said.
McIlroy, Moore and third-round co-leader Kevin Chappell were tied at 12-under 268 after 72 holes.
He still was tied for the lead after his up-and-down from the bunker on the par-5 18th for a birdie. With the purses added together, McIlroy departed Georgia $11.5m richer than when he arrived.
Johnson ran off three straight birdies on the front nine to go four shots clear.
Rory McIlroy's FedEx Cup glory comes a day after NBC commentator Johnny Miller called the European Ryder Cup team the "weakest in many years" - despite having the FedEx Cup victor, Open champion, Masters champion and Olympic champion.
It just didn't work out that way. Neither seemed like a problem until he played the wrong shot, clipped the tree and wound up with a double bogey Saturday in the Tour Championship.
It finally ended where it all started for McIlroy - on the 16th. McIlroy stiffened his back and screamed at reaching a goal that never looked like a possibility until the end.
"So to be here and to win the FedExCup, especially where I came in in the mid-30s somewhere, to play the way I have in the last few weeks to get it done is very special".
McIlroy - a former world No. 1 player who has won four major championships - went on to birdie No. 18, slipped into a playoff after Ryan Moore and Chappell both missed chances to win on their final holes and ultimately prevailed on the fourth extra hole.
"I knew I was right back in the golf tournament", he said. "So I was trying to just do something, make something happen. But you've still got to go out and play some really good golf".
NBC announced that Moore would be Davis Love III's final captain's selection during halftime of tonight's Bears-Cowboys matchup on Sunday Night Football on NBC. For him to win the bonus pool, he would need Johnson to have a bad day tomorrow. Johnson, however, still would have won the FedEx Cup if either Moore or Chappell had won the tournament.
"I do feel this coming week I am ready to step up and voice an opinion that would be seen to be more valuable than it was back in my last three Ryder Cups".
Chappell had a two-shot lead entering the 17th hole when his found the rough with his drive and made just his third bogey of the week.