Rose closed with a 65 and finished third. Tiger finished in 17th place at just one-under-par for the tournament, 19 shots back of the leader and ahead of only Hideki Matsuyama, who finished at even par for the event.
It was part of a wild five-hole stretch for the Swede, who also birdied the 14th, eagled 15 and picked up another shot at the last.
"I would love to get into the top 20 by the end of next year, it's definitely the next goal", Smith said. Rose needed to be in at least a three-way tie for second.
The world number 33 took a three-shot lead over his fellow Australian into day four of the European Tour-sanctioned event at the Royal Pines Resort on the Gold Coast, but it quickly evaporated.
Rahm had 25 and Cantlay 22 for a total of 47, which raised $23,500 for California Strong, which is helping families affected by the California wildfires. Gary Woodland had a 67 and, after being over par midway through the opening round, suddenly was just two shots behind. Rahm grew up on poa annua greens, still isn't entirely comfortable on Bermuda and asked Woods for advice.
"I've hit some brilliant shots but I wouldn't say I'm firing 100 percent", he said. "It was transforming as you're watching and I was playing, and where it is now".
In his first trip to the Hero World Challenge, it didn't take Jon Rahm long to figure out how to score.
It was both fun and learning for him.
"Tiger said that he did not think he hit the ball twice", Watson said.
As a Spaniard, he wears his heart on his sleeve.
"He was putting next to me and I asked him, because I'm not the best putter on Bermuda grass and I know it's kind of amusing to say that now", Rahm said.
Recalling the whole incident and the match, Rahm said, "Then on the last putt right before I hit it, somebody in Spanish yelled, "Do it for Seve", at the top of his lungs". "It means so much to play against Tiger".
"I'll try and make it to the finish line", Stenson said. When they mentioned Seve, I knew he would be up there.
"I somehow turned it around and got rolling a little bit to get to even par for the day somehow". "As soon as I got in the lead, my mind was still forward". I've kept saying it the same way.
"I added two degrees of loft in my putter after Thursday and then went out and shot 64 yesterday with it and so I made a decision to keep it", he said.
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