"Boy, to win two out of three events - it's insane to comprehend", said Kuchar, who missed the Tour Championship last year for the first time in eight years but has now taken his tally of US PGA Tour titles to nine.
Kuchar, 40, claimed his second win of the season - the ninth of his career - when he overcame a shaky start to post a closing four-under-par 66 and finish at 22-under 258, four shots clear of countryman Andrew Putnam (68).
Kuchar led by two overnight and had just one blemish on his scorecard over the first 54 holes, but his customary composure slipped early on the final day at Waialae Country Club as he endured a torrid run of three bogeys in four holes.
Keith Mitchell and Chez Reavie share third place at 14-under. "It felt easy out there". Along with his runner-up finish in the Sanderson Farms Championship last fall, he has almost as many FedEx Cup points as previous year when he finished at No. 130. Love is not playing next week on the Big Island because he is playing the Singapore Open.
He ended the 2018 season earlier than he wanted, failing to reach the Tour Championship for the first time since 2009 and ending his streak of playing on eight straight teams in the Ryder Cup or Presidents Cup.
On the 454-yard par-4 eighth, Smith had a bogey after hitting the green in 3 and two putting, moving Smith to 3 over for the round. It hopped into the back bunker, and he missed an 8-foot par putt to lose the lead.
The PGA Tour began keeping hole-by-hole records in 1983 and no one had made three eagles in one round on par fours since. But the veteran steadied himself down the stretch, racing past Putnam with a flurry of four birdies in seven holes on the back nine.
Before he made the turn, Thomas rolled in a 12-foot putt for an eagle on the 9th hole. That's the way I like to play, staying out of trouble.
For Kuchar, the victory will probably propel him all the way to the Tour Championship later this season and could even be the start of a career year. I anticipate shooting another good score tomorrow. He joins Xander Schauffle in the two-win club for this season and now has almost eight months to notch the first three-win season of his long, consistent and successful career.