An inability to birdie the par-five 18th, where he hit a poor third shot, was the only minor complaint Kuchar had after a four-under-par 66 at Waialae Country Club in Honolulu. He holed out for eagle three times from the fairway - a sand wedge from 101 yards on No. 10 at the start of his round; a 9-iron from 149 yards on No. 16, and a gap wedge from 135 yards on No. 6.
Not bad for a 40-year-old who ended last season failing to get to the Tour Championship for the first time since 2009, and ending his streak of playing on eight consecutive teams in the Ryder Cup and Presidents Cup.
The nine-time tour victor was flawless on the front nine.
Armed with a three-stroke advantage with just two holes remaining, Kuchar held firm and, after a cast-iron par at the penultimate hole, he completed a comprehensive win with his 24th birdie of the tournament at the 72nd hole. "I think the frustrating thing was I felt like I was doing some good things and just not seeing results". To put that into context, Matt Kuchar, who won the event, only made 307 feet of putts.
It was a further stroke back to Davis Love, who finished solo seventh with a 65 for 264.
Kuchar is 2-2 when he has the 54-hole lead going into the final round.
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Four players finished in a tie for third at 17-under including Australian Marc Leishman and Canadian Corey Conners. Kuchar followed with 12-foot birdie putts on the next two holes, and he was on his way to his ninth career victory.
Regular caddie John Wood was back on the bag in Hawaii for the duo's first victory since they began working together in late 2015. "I missed couple putts early but I was awfully steady, played bogey-free". There were no signs of jitters down the stretch en route to his 100th career top-10 finish on Tour.
The world number 32 said the quality of his play had been a little better on Thursday, even if his scores had been the same. "The more often you do it, the better you deal with it". However, his bunker shot got the flawless bounce off the green and one more off the flagstick for an impressive ending.
Peter Jung, who qualified by winning an amateur tournament, played in his first PGA Tour event.
I get where he's coming from and know that he's just trying to build confidence, but I might have to amend my "Spieth will win three times in 2019" take in a few weeks.
"Last year I probably ground harder than I've done in the past", he said.