In a field that featured the top five players in the world, Johnson made a strong opening statement that the No. 1 ranking he has held for almost a year might be hard to take away. He hit driver on the 433-yard 12th hole that went 432 yards and 6 inches, the signature moment in a final round devoid of drama. There also was the bullet of a drive into the wind on the 14th that ran onto the green about 25 feet away.
He finished at 24-under 268. Matsutama shot a 7-under 66 Sunday to move up eight spots on the leaderboard.
He closed with an 8-under 65 - the best score of the tournament - for an eight-shot victory. "If my mind's wandering and thinking about other things, then I'm not going to have a good day", Johnson said.
"I don't think they made the trip home from China", Johnson said. Jon Rahm at age 23 became the fourth-youngest player to reach No. 3 in the world with his runner-up finish at Kapalua.
Not surprisingly, Johnson believes he is close to the form he wielded early previous year when he won three straight starts and took over World No. 1 leading into the Masters.
Dustin Johnson underlined his status as the best player in the world as he coasted to a dominant eight-shot victory at the Sentry Tournament of Champions.
Johnson's 17th US Tour victory ensures he has a win in 11 consecutive seasons since debuting in 2008. That's the longest streak on the Tour, an achievement that very, very almost took a back seat to the longest hole-in-one in PGA history.
Forget dropping a six-shot final round lead at the World Golf Championships - HSBC Champions in China late past year.
If you thought the fictional Happy Gilmore could smack a ball hundreds of miles, then you haven't seen real life pro-golfer Dustin Johnson let one rip from 400 yards. "A day maybe. Not even", Johnson says. "Whether I win or lose".
Biggest disappointment: Harman was the closest to Johnson entering the final round, two strokes back, but he stumbled out of the gates and never factored.
Johnson's lone bogey of the day, at the par-3 11th, preceded one of the all-time jaw-dropping bounce-back shots in memory-the meteor he launched toward the 12th green that resulted in his second eagle in as many days at the hole. It's a blind shot over the hill, with a strong wind at his back, so he never saw the ball race down the hill, onto the green and head straight to the cup until stopping 6 inches away. And it's not like the 2016 U.S. Open victor hadn't already holed out a shot at the 12th when he jarred a 65-yard chip for an eagle on Saturday, meaning that he played that hole over the weekend in a mere four strokes.
That stretched his lead to seven shots, and the rout was on.