Last season Johnson won four times, marking the best year of his career, and he said in Hawaii that he believed it was possible for somebody to win eight times or more in a year.
The world's No. 1 golfer was back in action at the Sentry Tournament of Champions in Hawaii this weekend and launched a few jaw-dropping shots including a very near hole-in-one on a par four.
You knew Dustin Johnson could absolutely bomb it off the tee (No. 2 in driving distance last year), but this is absolutely incredible.
Johnson's ball flirted with the fairway bunkers on the left, but it took a big bounce which took it directly towards the flag, hopping onto the green before pulling up just six inches short of the cup.
"This week was better than I thought", Matsuyama said.
The 33-year-old, who won four times last season, picked up four birdies on the first nine and added three more to go along with an eagle at the par-4 12th hole to shut the door on the competition.
If his ball had consented to drop on the 12 in Kapalua, Johnson would have become just the player in PGA Tour history to make an ace on anything other than a par three (emulating Andrew Magee's feat at the Phoenix Open in 2001). He led by at least five shots over the final 11 holes. "I just didn't think I was going to have a tap-in".
"I got off to a great start, and I want to keep it going", Johnson said.
Johnson, who seized the world No. 1 ranking last February, has now won at least one USA tour title for 11 straight years. Jordan Spieth also won by eight shots in 2016. "I know exactly where I want it to come down out of the air, and it did".
"It's no easy task, " said Rahm, who lost to Johnson in the final of Match Play a year ago. I told myself to get it to 25.