Bryson DeChambeau says turning his back on the PGA Tour and joining the Saudi-funded LIV Golf series was "a business decision, first and foremost".
The 2020 US Open champion, 28, became the most significant player to join the fledgling circuit last week.
"There were a lot of financials to it and a lot of time," said the American, an eight-time winner on the PGA Tour.
"I get to have a life outside of the game of golf as well. [It's] a business decision for my family's future."
DeChambeau intends to play the final seven LIV Golf events this year, beginning with a debut appearance at Pumpkin Ridge in Portland on 30 June.
The first of seven 54-hole, $25m (£20m) events took place at Centurion Club, in Hertfordshire, last weekend - with former Masters champion Charl Schwartzel claiming victory and $4.75m (£3.86m) in the most lucrative tournament in the sport's history.
The eight-event series, which is backed by Saudi Arabia's Public Investment Fund (PIF), has a prize fund of $250m for 2022, while an extra £1.6bn has been secured to expand it to a 14-event league by 2024.
So far 17 players, including six-time major winner Phil Mickelson and 2020 Masters champion Dustin Johnson, have been suspended from the PGA Tour indefinitely for taking part in the opening event. Many have resigned their PGA Tour membership.
