Talor Gooch held on to capture his maiden LIV Golf title in Adelaide.
Gooch, 31, who won once on the PGA Tour before bolting to the rival-backed league last June, slept on a mammoth 36-hole lead at The Grange.
That lead was a whopping 10-strokes after he carded consecutives rounds of 62 to set up a victory lap on Sunday.
Gooch eventually posted a final round of 1-over 72 for a 19-under total, which in the end was good enough for a three stroke victory.
As a consequence of his victory, Gooch pocketed the standard $4m first place payout from the $25m prize purse.
India's Anirban Lahiri, who complained of loneliness before leaving the PGA Tour, put the pressure on Gooch with a blistering final round in front of a packed crowd.
Lahiri posted 7-under par but in the end he was just too far adrift.
Patrick Reed, fresh off another fine performance at The Masters, came in third on 15-under.
LIV's poster boy Cameron Smith also put in a fine performance on the final day of his homecoming, tying for third at 15-under alongside Cameron Tringale and Pat Perez.
There were fireworks as Brooks Koepka's brother Chase made a hole-in-one at the 'party hole', hitting a trap-draw with a 9-iron to send the crowd bonkers.
Dustin Johnson's 4 Aces won the team element by one stroke. The all-American side played their first winning hand of 2023 by reaching 47-under.
Bubba Watson's RangeGoats, which Gooch is a part of, finished second. The South African Stinger side finished third.
In the immediate aftermath of his victory, Gooch said
Gooch's round threatened to unravel after he made a double bogey in the middle of his round.
LIV will head to Singapore over 28-30 April for their next event before heading to Gooch's home state of Tulsa, Oklahoma in early May.
T. Gooch -19
A. Lahiri -16
P. Reed, C. Smith, C. Tringale, P. Perez -15
D. Burmester, C. Schwartzel -14
D. Johnson -10
Team final results
4 Aces -47
Range Goats -46
Iron Heads -28