Patrick Reed came through in the clutch, firing three late birdies in a four-under par 67 for a one-shot victory over Bryson DeChambeau in the WGC Mexico Championship.
Former Masters champion Reed stayed patient through a frustrating front nine at Chapultepec Golf Club on Sunday, and as a string of leaders fell away powered to the victory with an 18-under par total of 266.
Birdies at the 15th, 16th and 17th pushed him to 19-under for the tournament, giving him a two-stroke lead.
The cushion proved enough after he pushed his tee shot at 18 well right, Reed limiting the damage to a bogey for the narrow win.
"It's very rewarding," said Reed, whose only other WGC title came in the same event in 2014, when it was played at Doral in Florida.
"To come back and win my second World Golf Championship -- especially with how I had to finish on basically 15 onwards. The last hole was ugly, but it was what I needed to get the job done."