[PHOTO: Alex Goodlett/LIV Golf]

A lot has happened in the nine weeks since Cameron Smith won the 150th Open Championship at St Andrews. The popular Australian confirmed the worst kept secret in golf last month when he announced he’d signed with LIV Golf. His defection triggered a ban by the PGA Tour, including from this week’s Presidents Cup.

Smith had told this publication a large, guaranteed money contract was one of the reasons for leaving the PGA Tour at the height of his career, but the ability to spend up to three months a year in Australia was the biggest lure. The 29-year-old said it had been tough to miss out on family and friends’ weddings and birthdays in his homeland given that the PGA Tour’s wraparound schedule restricted his time away from his US base.

RELATED: Here is the prizemoney payout for each player at the LIV Golf event outside Chicago

His defection, and his reasons for it, were criticised – namely by Gary Player and Fred Couples. Player questioned why Smith would defect to a tour that features 54-hole events, no cut and 48-player fields saying, “What sort of tour is that?”

Couples’ comments were seen as more of a swipe. He posted on social media, “To all my friends who I missed birthdays & weddings… so sorry, I was busy earning a living on the @pgatour and in my line of work the goal is to EARN your way to work weekends … and by weekends I mean 72 holes.”

Today, Smith admitted he had a point to prove in shooting a closing 69 at Rich Harvest Farms to win the LIV Golf Chicago Invitational by three shots (66-68-69, 13-under) over Dustin Johnson and Peter Uihlein, who both finished at 10-under par.

“I think I had to prove to probably myself and some other people that I’m still a great player,” Smith said after his round. “I’m still out here to win golf tournaments. I’m proud how I hung in there today.”

Smith reiterated those comments having just secured a $US4 million prize. That becomes the biggest tournament pay cheque of his career, usurping the $US3.6 million Smith collected for his victory at the Players Championship in March. He said he’d felt the pressure of living up to his billing in the rival league from the moment he debuted in Boston two weeks ago.

“I think probably that first event was the most pressure I’ve been under all year inside of an event,” he said. “I feel as though I needed to prove to myself, and probably more so to other people, that just because I’ve changed tours doesn’t mean I’m a worse player for it. I’m still out here to win. That’s what we’re all here for. Hopefully we can keep this going.”

Photo: Charles Laberge/LIV Golf

Many in golf lamented that Smith, with six PGA Tour wins already, had foregone the opportunity to create a legacy on a circuit that returns annually to historic tournaments like the Canadian Open (1904) and L.A. Open (1926). But Smith said he wanted to be a part of something new.

“I think for sure there is a history aspect that is for certain missing [with LIV], but it doesn’t mean the tournament is a bad tournament because of it,” he said. “There are 48 of the best guys out here trying to compete and trying to win. In 10, 20 years’ time, these could be the biggest events in the world. We’re just not there yet.”

Next up for Smith will be LIV’s tournaments in Thailand and Saudi Arabia, which will be followed by the Miami finale to LIV’s inaugural season.

RELATED: Bryson DeChambeau stunned as he walks head-first into a gallery rope

“One of the reasons why I came over [to LIV] is to play golf around the world,” he said. “When I was a young professional over in Asia, they were some of the best times of my life. Travelling with good friends and playing really good tournaments was something I’ll never forget, and I’m really looking forward to what this tour is going to bring to the golf world.”

For now, Smith will only travel as far as a return to his Jacksonville-area base in Florida to celebrate his fourth victory of the year, after the Sentry Tournament of Champions, Players and Open titles. “I’m sure it’ll be a late night,” he said. “We can’t fit any beers in this trophy, so it’ll be a little bit difficult to drink out of this one.”