Max Homa has chipped in from nearly 33 feet for birdie on the closing hole, then watched as Danny Willett shockingly three-putted from inside four feet to give Homa his second straight title at the season-opening Fortinet Championship in Napa, California.
Homa high-fived his caddie when his ball hit the flagstick and dropped on Sunday. His previous shot from a nearby bunker came up short of the green at the par-5 18th hole. Englishman Willett, meanwhile, had a one-shot lead at the rain-soaked PGA Tour season opener and stuffed his third shot to three feet, seven inches.
He rammed his first putt by, then missed the return to hand American Homa his fifth victory on tour.
"Them things happen. Luckily we've been in a good position all week and then unfortunate things happen when you feel like you need them most," Willett, who's winless in the United States since he took advantage of Jordan Spieth's collapse to win the 2016 Masters, said.
Australia's Harrison Endycott finished in a tie for 12th in his first event on the PGA Tour. The 26-year-old Sydneysider shot an even-par final-round 72 to finish nine under. Compatriots Cameron Percy (67) was seven under and Aaron Baddeley (71) one further back.
Homa closed with a four-under 66 for a total of 16 under and now heads to Charlotte, North Carolina, as a captain's pick for the Presidents Cup with three wins in the past 12 months. Willett shot 69 and Taylor Montgomery 64 to finish third at 13 under.
"I've had a few guys tell me that if the LIV guys hadn't left I wouldn't have made the President's Cup team, so I had a little bit of a chip on my shoulder this week," world No.20 Homa said.
"That was crazy. I still don't really know what happened.
"Just kind of one of those weekends you just had to hang around."
The leaders had their tee times pushed up by nearly four hours in an effort to get the round in before the North course at Silverado Resort & Spa became completely unplayable due to the wet.
Justin Lower (73) held a one-stroke lead going into the final day while chasing his first title after years of struggles just to secure his tour card. The 33-year-old American wound up tied for fourth with South Korea's Byeong Hun An (71) at 12 under.