Graeme McDowell has slipped back to seven shots off the lead ahead of Sunday's final round at the Corales Puntacana Championship.
The 2010 US Open champion is a former winner of the event in the Dominican Republic, triumphing in 2019.
Saturday though saw the Antrim native card a third-round 73 and drop back from the leaders, having previously managed consecutive 68s on the opening two days.
Ben Martin shot two-under 70 to maintain a two-shot lead, with Chad Ramey in second place after carding a 69, while Venezuela's Jhonattan Vegas is third and three shots back after shooting a seven-under 65 for the best round of the day at Corales Golf Course.
Martin carded back-to-back 66s before his five birdies and three bogeys in the third round and enters Sunday's final round at 14-under. He is shooting for his second career PGA Tour victory and first since 2014.
"I'm going to keep doing what I've been trying to do all week, which is just enjoy being out there, not try too hard and sort of see what happens at the end," said Martin, 34.
"But this is really the reason I think I enjoy playing professional golf, like being around the lead on the weekend with a chance to win.
"You have a little nerves, but I think that's why we all like to test ourselves and see where we are, so it will be a fun day tomorrow."
Ramey had an eagle on the par-5 14th hole, four birdies and three bogeys. One of the bogeys came on the 18th hole, preventing him from moving within one shot of Martin.
Ramey, 29, is looking for his first career victory. After a 70 in the first round, he responded with a 65 to move into contention.
"I don't hit it the longest out here, but I usually keep it out in front of me," Ramey said. "Hit a lot of fairways, hit a lot of greens. Then if I can get the putter working, usually shoot (a good) score."
Vegas had five birdies and an eagle on the par-5, number seven during a bogey-free round. He shot 70 in each of the first two rounds before the sharp turnaround.
"Saturday is moving day, you've got to keep the pedal down and try to make as many birdies as you can," Vegas said.
"Obviously, the scores are going to keep going lower and lower. If the wind is the same way tomorrow, you have to go out and shoot a low one, but at the end of the day it's golf. You've got to go enjoy it and do your best."
The 37-year-old Vegas has three PGA Tour wins, the most recent coming in 2017.
Five golfers are tied for fourth at 10-under: Martin Trainer, David Lipsky, Nate Lashley, Australia's Cameron Percy and Belgium's Thomas Detry.
Additional reporting: Reuters
