Four-time major champion Koepka closed the LIV Golf League Orlando tournament with a three-under 68 at Orange County National on Sunday for a one-shot victory over Colombia's Sebastian Munoz (66).

Koepka is one of 18 players from the Saudi-funded LIV Golf league who now head to Augusta National for the Masters starting on Thursday.

"Going into next week that's what you want to see," said Koepka, who finished the event at 15-under.

Open champion, Smith has a tremendous record of top-10 finishes at Augusta National in recent years but won't go in with any great tournament form this year after sharing 26th place.

Smith shot a closing 70, with a double bogey and two bogeys marring his five birdies as he finished tied in a group including countrymen Marc Leishman (68) and Jed Morgan (67).

Koepka looms as a likely threat at next week's Masters. PHOTO: Getty Images.

Former Masters champion Patrick Reed (68) and South African, Dean Burmester (64) tied for third.

The penultimate hole shed some insight into the team component of LIV Golf.

Koepka and Munoz both were about 40 feet away for birdie. Koepka went first and left the putt just over 4 feet away. Munoz needed to make birdie to force a pla-yoff. However, his Torque team had a one-shot lead over the Smash team led by Koepka.

If he were to hit the putt too hard and three-putt for bogey, Munoz might have cost Torque the team title. He left it just under 4 feet short and made the par for Torque to win a team competition for the first time.

"It's weird because I knew we were one stroke ahead on the team, so I couldn't go extra. I knew I couldn't be too aggressive," Munoz said.

"He got the individual, we got the team. I call it a tie."

It might not feel like a tie for Koepka's bank account. He collected $US4 million ($A6 million) for winning. Koepka's previous LIV title was in Jeddah, Saudi Arabia last year.

"It's good to play some good golf. I get chills thinking what I'm capable of."- Brooks Koepka

He had been battling various injuries for nearly two years and feels as though he is healthy for the first time in years as he goes to Augusta.

"You look at everything I've been through, I'm finally healthy," he said.

"It's good to play some good golf. I get chills thinking what I'm capable of."

Koepka said Orange County National, was a good test for the Masters because the greens were fast and burned out, and the pins were on some slopes.