Graeme McDowell carded a second round two under par 69 to stay in the hunt at the RBC Heritage event on the PGA Tour.
The 2013 winner of the tournament at Hilton Head, started the day as joint leader after an opening round 66 but struggled to match his peerless round one play.
The 35-year-old made a great start to the round grabbing a birdie at his opening hole of the day, the 10th, but dropped shots at the 14th and 18th to go to the turn in one over 36.
The 2010 US Open champion picked up the pace on the back nine, collecting four birdies and dropping just one more shot at the sixth to come home in 33 shots.
American Troy Merritt leads the way after a stunning 10 under par round of 61.
He heads John Merrick and defending champion Matt Kuchar by four shots with McDowell tied for fourth on seven under par.
Meanwhile, over on the European Tour, Michael Hoey carded a one under par 71 to comfortably make the cut at the Shenzhen International on one over par in China. Hoey collected two birdies at the second and seventh alongside one dropped shot at the par four fifth.
Peter Uihlein bettered Kiradech Aphibarnrat’s 69 by one to move a shot clear of the Thai in a halfway lead of nine under par at Genzon Golf Club.
The American matched Aphibarnrat’s five birdies, the last coming at the tenth, his final hole, but dropped just one shot in his second round.
“It was tricky today. The wind was swirling quite a bit. I played a pretty stress free front nine which is always good,” he said.
Ireland’s Damien McGrane, Kevin Phelan and Peter Lawrie missed the cut.