Second-round leader Bryson DeChambeau had the confident stride of a pending victor with his first solo 36-hole lead as a pro - at least until the third round got going.
On a low scoring day in South Carolina, Poulter's round of seven under moved him to nine under at the halfway point of the tournament - a shot adrift of leader Bryson DeChambeau.
After an eagle, two bogeys and three birdies on the front nine, American DeChambeau picked up shots at the 13th, 15th, 16th and 17th holes to leapfrog above Poulter and Kim.
Before April, Poulter had not won on tour in more than five years. "I know that. But I certainly am moving in the right direction, figuring a lot of great things out that's helping me on the golf course".
Two weeks ago, the Englishman clinched a dramatic play-off win at the Houston Open, which earned him a spot in the field for last weekend's Masters.
Ian Poulter raced into contention for his second win in three weeks after firing a flawless 64 on the second day of the RBC Heritage in SC.
"Confidence is definitely there from a perspective of feeling like I can be more aggressive right now", Poulter said. I can free myself up in my mind.
Even the South African American, that tweaked his back this week while working on his swing, shot a 64 who left him at Harbour Town on Hilton Head Island from John Huh, Billy Horschel, Matt Kuchar and also Chesson Hadley. After grabbing a two-shot lead with a birdie on No. 1, DeChambeau imploded with a triple-bogey eight on the normally birdie-able par-5 second. "Once you get on these greens, you feel like you have a chance to make putts", he said.
Sabbatini, chasing a seventh PGA Tour victory and first because 2011, begun to the back 9 and made four birdies to make it to the turn at four beneath. "I have a great feel around the greens and I feel really confident around the greens". He looked to continue his strong play at Harbour Town where he posted 10 birdies to one bogey during Wednesday's pro-am.
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