Shane Lowry was left to rue a double bogey on the 12th at the RBC Heritage which saw the Offaly man slip to tied third place, and allowed CT Pan to secure his maiden PGA Tour title.
Just a shot behind world number one Dustin Johnson starting the day, Lowry closed with a one-under 70 to finish tied with Patrick Cantlay and Scott Piercy on 10-under par.
He ended up two shots behind 27-year-old Pan, who shot a four-under 67 to win his maiden PGA Tour title by one stroke from Matt Kuchar, who shot 67, on 12-under par.
After briefly moving two shots clear after birdies at the second, fifth and sixth, Lowry was shocked to miss a three-footer for par at the ninth before a double bogey six at the 12th, where he took four to get down from 35 yards left of the green, all but scuppered his title chances.
Meanwhile, Seamus Power had a magnificent finish at the South Carolina venue.
Carding a final round of 67, the West Waterford man secured a season best finish of tied 6th.
This performance sees him re-positioned at 141st on the FedEx Cup points table; an improvement of 48 places.
The 32 year old said he’s hoping this week will be a stepping stone to greater things.
“I didn’t make to many mistakes and my short game was pretty good all week,” Power said after his first individual top-10 finish for 13 months earned him $231,150.
“I made one bogey on one of the easier holes, which was disappointing but overall it was a tricky day so I can’t complain too much.”
Out in one-under par after following birdies at the second and fifth with a bogey at the ninth, he birdied the 13th and 15th before making a 60 footer for his fifth birdie of the day at the 16th.
“I can take a lot from this,” said Power, who missed seven cuts in a row either side of Christmas. “The last four or five tournaments have been much, much better. I started to find something at The Players (tied 35th) and it’s been encouraging.
“A week like this is great. It gets me kickstarted. I’m obviously not where I want to be but it’s a step in the right direction.”