American Kevin Kisner produced six birdies in a final round four-under-par 66 to win the PGA Tour’s Dean & Deluca Invitational.
The 33-year-old trailed overnight leader Webb Simpson by three strokes before clinching the second PGA Tour title of his career.
Defending champion Jordan Spieth was tied second with fellow American Sean O’Hair and Spain’s Jon Rahm, while Simpson finished fifth in Texas.
Rahm had the best chance to force a play-off, but missed a 10-foot birdie putt at the last as Kisner overcame late nerves to secure victory. He had a bogey at the 16th before sinking a five-foot par-saving putt at the final hole.
Paul Casey started the day tied second, but ended tied 10th. The 39 year old recorded four bogeys in his final round 73.