A final round 67 sealed a top-10 finish for Shane Lowry at AT&T Pebble Beach Pro-Am while Rory McIlroy saved his best for last with a blistering 64 as Collin Morikawa tapped in a birdie putt on the final hole to claim his first tournament title in more than two years.
Lowry finished on a tie for eighth on 18-under par, four shots behind Morikawa in a final round that included five birdies and not a single dropped shot.
The Offaly man went close to an eagle at the second, settling for a birdie after a superb approach shot.
It was a steady front nine, before picking up another shot at 11. Lowry then hit a purple patch of three bridies on the spin, including a 13ft putt at the 15th.
McIlroy meanwhile evenly split eight birdies across the front and back nine to card a 64, finishing one shot adrift of his Irish compatriot on 17-under par.
Half a dozen shots adrift at the halfway stage, the 36-year-old had insisted a challenge remained on the cards before a third round 72 extinguished those hopes.
However a blemish-free final day saw him surge up the standings.
McIlroy reeled off four birdies in the opening half a dozen holes, including a 32ft putt on the par-4 fourth, a hole which he triple-bogeyed on Saturday.
A 42ft birdie putt at the 12th fell inches short, but exquisite iron play ensured he picked up shots in the following two holes, with the final birdie of the round coming at the last to finish in a tie for 14th.
World number one Scottie Scheffler - pictured above - came up short in a remarkable final-round charge and had to settle for an 18th consecutive top-10 finish.
The four-time major winner began the day eight off the lead and although he posted the first three-eagle round of his PGA Tour career on his way to a 63, it was still not quite enough.
His 20-under total was two adrift of Morikawa, who birdied the last for a 67 to edge out Min Woo Lee, whose 65 catapulted him into contention late on, and Austrian Sepp Straka (68) by a stroke to claim his first win in over two years.
Scheffler was seven under through seven holes and only two behind but he stalled at the eighth with the first of three bogeys, and despite back-to-back birdies at 10 and 11 he could not regain the momentum.
Nevertheless, the American has finished fourth or better in his last seven PGA Tour starts; there are only two instances in the last 40 years of a player extending that to eight and both were achieved by Tiger Woods.
