Johnson wins in Mexico in first tourney since becoming world's No. 1

The only elevation that mattered at the Mexico Championship is how much higher Dustin Johnson can go.

In his first start since a five-shot victory at Riviera that made him No. 1 in the world, Johnson captured his fourth World Golf Championships title Sunday in Mexico City by blowing by some of golf's biggest names and then delivering his best shot at the end to secure a oneshot victory over Tommy Fleetwood of England.

He won for the fifth time in his last 15 starts on the PGA Tour, including a major and two World Golf Championships.

And at nearly 7,800 feet above sea level at Chapultepec Golf Club, Johnson kept soaring.

He closed with a 3-under 68, and finished this one off with one of the most difficult shots in golf. Clinging to a one-shot lead, his feet on the edge of the bunker and ball below his feet, Johnson hit a three-quarter shot from 127 yards with his 54-degree wedge to the middle of the 18th green for a two-putt par.

He called it a "dink." He also could have called it clutch.

"Probably the best shot I hit all week, especially under the circumstances, was that second shot on 18," he said. "A fantastic shot."

It wrapped up a spectacular week in Mexico City, which hosted this World Golf Championship after it had been at Trump Doral the last seven years. Johnson walked through the roped corridors with his arms extended to slap hands and bump fists with an energetic crowd, especially kids who called out, "Dee-Jay!" Johnson finished at 14-under 270. Justin Thomas had a one-shot lead over Johnson, with Rory McIlroy and Phil Mickelson another shot behind. It was an All-Star cast that Johnson turned into a one-man show with a 31 on the front nine to build a four-shot lead. And just like that, it was gone. "Around here, anything can happen," Johnson said.

Johnson became the fifth player to win in his first tournament as No. 1 in the world. His fourth World Golf Championship title is second on the career list behind Tiger Woods, who won 18 times since the series began in 1999.

Johnson was steady right to the end to capture his 14th career victory on the PGA Tour, and his second straight.

CHRISTIAN PALMA/AP PHOTO Dustin Johnson poses with his Mexico Championship trophy on Sunday at the Chapultepec Golf Club in Mexico City. Johnson, the world’s No. 1 player, won by a stroke over Tommy Fleetwood.