"We will do everything we can to play tomorrow but we'll just see what Mother Nature gives us", PGA competitions vice president Carlton "Slugger" White said. "We're shoveling sand against the tide".
Justin Rose reacts to his birdie on the third green during the third round of the BMW Championship. However Bradley boggied 18 while Rose birdied 17 eventually sending the two into a playoff duel for the tournament.
Rose settled for solo second but it was still enough to lift him from fourth in the rankings to world number one, overtaking Dustin Johnson for the top spot.
After the Atlanta, Georgia event, the leading points scorer is crowned the FedEx Cup champion and pockets a $US10m ($A13.9m) bonus.
Keegan Bradley might be there, too, all because of one putt.
Bradley took home the trophy and left Eagles fans in the crowd with this message. Four players were tied at 10-under, including Bradley, while McIlroy and Thomas were in a group of five golfers to finish the day at 9-under par. The top 30 players in the FedEx Cup standings will take part in that tournament.More news: Anonymous peeks behind the White House curtain
The forecast was for light, scattered showers Monday morning, with thunderstorms developing in the afternoon. He'd like another crack at Rose.
This is significant because it's the first time Spieth has missed the Tour Championship as a professional, but it's also significant because Spieth will end the season with only 24 tournaments played. Tiger Woods shot 66 and was five back. That allows him to move on to East Lake and the TOUR Championship for the first time since 2013.
No one needs to play Monday as much as Spieth.
The PGA Tour's regulations stipulate a major penalty, which could be a fine or a suspension, although commissioner Jay Monahan has discretion, and it's unclear if any sanctions would be announced.
Keegan Bradley worked towards this moment for more than six years.
Hideki Matsuyama placed 27th in the FedEx Cup points race after the third of four legs that make up the PGA Tour's FedEx Cup playoffs, earning a spot in the season-ending Tour Championship.