Bryson DeChambeau finished off a 6-under-par 66 with birdies on two of the toughest holes, giving him a one-shot lead going into a final round at a Memorial that features Tiger Woods in the mix at Muirfield Village for the first time in six years. "If I just make a few more putts like I did earlier in the year, when I was putting really well, you put those two together, then we'll have something".
Woods is four shots off the lead heading into Sunday's action.
Woods just wrapped up his penultimate round at The Memorial Tournament, which takes place at Jack Nicklaus' club outside of Columbus, Ohio.
"It's a strong field on the leader-board and I think everybody's going to go out there and try to make the most birdies possible", Niemann said.
DeChambeau, who began the day with a one-shot lead, had a chance in regulation to secure his second win on the PGA Tour but his celebration was put on hold after he missed his par putt from eight feet at the last.
Tiger could easily have the lead at this point, but struggled with the putter and finds himself four shots back of the leader, Joaquin Niemann, who is looking to become the youngest victor on the PGA Tour since 1931.
And he was again trying to keep things in perspective, having played his ninth tournament of the year. Overnight co-leaders Niemann and Stanley both carded 70 while Cantlay's 66 included two eagles, one of them a hole-in-one at the par-three eighth.
An, who matched DeChambeau with a par at the first extra hole, also struggled, pulling his approach well left on the second overtime hole.
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Kyle Stanley didn't have the same problem, rallying from five strokes down with five holes to play with birdies at four of his last five holes, a run that was only marred by a bogey at the last to finish tied with Dechambeau and An. "I hit a lot of good putts today, and I just didn't do it at the end".
"It was a little 7-iron, tracked it basically the whole way and fortunate to have it go in", he said.
McIlroy almost missed the cut, surviving on the number after two days.
DeChambeau failed to take advantage, however, three-putting from 55 feet to fall into the three-way playoff.
World number one Justin Thomas eagled the 15th and then holed from a bunker to add a birdie at the next, before a birdie at the last gave him a round of 68 and a share of 11th.
Woods shot scores of 72-67-68-72 to finish at 9 under par. He fell out of a tie for the lead on the 15th when his shot flared out to the right and caught the corner of a creek, leading to bogey.
Bryson DeChambeau is a PGA Tour victor again.