World No 1 Dustin Johnson eases to eight-shot victory in Hawaii

World No 1 Dustin Johnson eases to eight-shot victory in Hawaii

World No. 1 Dustin Johnson sent his rivals a warning by powering to an eight-shot win, the biggest margin of his career, at the PGA Tour's Tournament of Champions and insisting he has a lot of room for improvement.

Johnson sits at 19-under-par through eight holes while Spaniard Rahm is 14 under after nine holes. "I was hitting some good shots, just didn't score very well".

"I've really been driving the ball (well) this week", added the American, who has a new driver in his bag. "So I knew as long as I could keep doing that, then I was going to play well".

American Brian Harman finished third on 15 under while Open champion Jordan Spieth was a further three shots back.

Co-overnight leader Harman was the man to catch over the front nine after he came agonisingly close to holing a 190-yard five-iron for albatross, and he followed the resulting tap-in eagle with a sublime tee-shot to within three feet at the eight for birdie.

But Johnson had put himself out of reach of all pursuers in the elite 34-player event for 2017 tournament winners.

But he three-putted from the rear fringe before offsetting a birdie at nine with his only blemish of the day at the tough 11th, although he atoned immediately when his ideal pitch-and-run from over 72 yards rolled into the cup for an eagle-two.

His only miscue of the day was at the par-three 11th, where he was in a bunker off the tee en route to a bogey.

He picked it back up with a 10-foot birdie on No. 12, and again on No. 15, when he drained a 10-foot eagle, following that with two straight 12-foot birdies. He finished the tournament at 14-under in a three-way tie for fourth.

"After China, where I struggled a little bit on Sunday, I didn't want to back down", Johnson said. I told myself to get it to 25.

Johnson, who seized the world number one ranking last February, has now won at least one United States tour title for 11 straight years.

"I feel like when I'm in this position I need to finish it off... but a lot of golf to play". "Things are going in the right direction".