American Kevin Streelman finished with seven straight birdies to win the Travelers Championship by one shot and land his second PGA Tour title.
The 35-year-old fired a 64 for a 15-under-par total to edge Spain's Sergio Garcia and South Korean KJ Choi.
The world number 58's closing run in Connecticut bettered Mike Souchak's six closing birdies to win the 1956 St Paul Open.
"[It was] just one of those days where I felt I couldn't miss," he said.
"It's probably my favourite nine holes on the PGA Tour. But you can't plan for something like that to happen. It just kind of falls into place."
Garcia now has six top-10 finishes in 10 PGA Tour starts this season, having won the European Tour's Qatar Masters in January.
He is currently fourth on the world points list, and well placed for automatic qualification for September's Ryder Cup defence in Scotland.