Home favourite Hideki Matsuyama won the ZOZO Championship in Chiba by five shots after carding a final-round 65.
Masters winner Matsuyama held a one-shot overnight lead from Cameron Tringale and sealed victory in style with an eagle at the last.
Matsuyama, who became the first Japanese man to win a major when triumphing at Augusta in April, had bogeyed the 17th, but birdies at the 11th, 13th and 15th already had him in control.
The 29-year-old also eagled the sixth hole in an otherwise solid front nine, which included one bogey at the eighth and seven pars.
Brendan Steele finished five shots back after posting a final-round 66, sitting alongside fellow American Tringale, who closed with bogeys at the final two holes to finish with a 69 having posed a threat for so much of the day.
England’s Matt Wallace carded a final round of 70 to finish in tied fourth place after heading into Sunday’s final round four strokes off the pace.
Wallace birdied the fourth, eighth and ninth holes, but that was after he had bogeyed the first and he also dropped single shots at the 11th and 15th.
Fellow Englishman Tommy Fleetwood, who began the day five behind the leader, posted a second successive level-par round of 70.
Fleetwood finished tied seventh alongside American trio Luke List, Sam Ryder and Collin Morikawa, plus South Africa’s Branden Grace.

Big profits for star golf tipster
Matsuyama's win ensured +48pts on Ben Coley's outright preview for the tournament after he advised 4pts win on the headline selection, saying:
"Matsuyama has been a little underwhelming during the last fortnight in Las Vegas, but prior to that looked in excellent touch at the Fortinet Championship.
"He's always been a little difficult to pin down from one week to the next and his putter has started to misbehave since a flying start to the Shriners, but these Bentgrass surfaces remain preferred and I anticipate a big step up for a return home to Japan."
Later in the day there was more great news for Coley's followers as his 200/1 selection Sebastian Garcia-Rodriguez was placed in the Mallorca Golf Open, meaning 26 points of profit from that tournament preview.
That takes his profits for 2021 to a tremendous +624.73pts - you simply can't afford to miss his advice every week.