Jon Rahm birdied the fourth extra hole to beat Andrew Landry and clinch his second PGA Tour victory at the CareerBuilder Challenge in California.
The 23 year old Spaniard holed out from 10 feet in fading light on the 18th green at the third time of asking to earn his fourth win since turning professional less than 20 months ago, lifting him to second in the world rankings.
Landry had a putt from similar distance to extend the contest, but his effort slid past the cup on the right side. The American had earlier forced the play-off by holing an almost identical putt in regulation, and the pair both missed good chances for birdie on the 18th green twice, before trading pars again at the 10th. The pair returned to the 18th tee and Rahm pushed his three-wood into the right rough, before Landry flushed his driver straight down the middle of the fairway before applying the pressure with a well-judged second.
But the Spaniard was up to the challenge as he took advantage of a good lie to fire his approach straight over the pin, and he atoned for his earlier misses as his slippery birdie putt dropped in the right edge.
Rahm had earlier set the clubhouse target at 22 under par after carding a 67 on the Stadium Course, reaching the turn in 34 before making three birdies in five holes on the back nine.
Landry emerged as the biggest threat when he birdied the 13th, although a run of four pars left him needing to birdie the 72nd hole to join Rahm at the top of the leaderboard. He held his nerve to find the centre of the cup with his perfect putt for a three, but he could not repeat the feat four holes later as Rahm celebrated leaping above Jordan Spieth in the world rankings.