NEWTOWN SQUARE, Pa.

Two putts began taking on more significance with each rain delay until there was no golf at all Sunday at the BMW Championship.

Aronimink Golf Club already was saturated when a steady rain caused tiny streams and large puddles in the fairways, leaving the PGA Tour little choice but to wait until today to either play the final round or decide to cut short the third FedEx Cup playoff event to 54 holes.

Justin Rose was ahead by one shot, all because of one putt.

He was tied with Xander Schauffele on the 18th hole of the third round Saturday when Schauffele’s 8-foot par putt rimmed around the high side of the cup, giving him a bogey and Rose the lead.

Rose can go to No. 1 in the world for the first time in his career with a victory, making him the 22nd player to reach the top since the ranking began in 1986. He also would be the No. 2 seed behind Bryson DeChambeau among the top 30 who advance to the Tour Championship in two weeks, giving him a clear shot at the $10 million prize.

Keegan Bradley might be there, too, all because of one putt.

Bradley left his 50-foot birdie putt about 7 feet short on the 18th hole Saturday. He made that for par to finish the third round in sixth place, three shots out of the lead. That projects him to move up 22 spots into the 30th position in the FedEx Cup, which would bump out Jordan Spieth.

The forecast was for light, scattered showers this morning, with thunderstorms developing in the afternoon. The hope was that the rain would be light enough to play, and the thunderstorms would be slow to develop.

The first tee time was scheduled for 7:30 a.m. The last group was to tee off at 8:50 a.m.