Australia’s Cameron Smith banks $6m from first LIV Golf win in Chicago

Australia’s British Open champion Cameron Smith has claimed his first LIV Golf victory in only his second start on the lucrative Saudi Arabia-backed circuit with a three-shot triumph over Dustin Johnson and Peter Uihlein just outside Chicago.

Smith, one of 12 major champions in the 48-player field at Rich Harvest Farms, shot a three-under-par 69 in the final round of the 54-hole event on Sunday to reach 13 under and secure the $US4m ($A6m) first prize.

“I think I had to prove to probably myself and some other people that I am still a great player, you know I am still out here to win golf tournaments,” Smith said.

“Proud of how I hung in there today. Didn’t really have my best stuff the first eight or nine holes but stuck it tough and made a few good putts coming in. It was nice.”

The stage was set for a final-round duel between two of the world’s best golfers as overnight leader Smith began the day two shots clear of playing partner Johnson (70), who fell three shots back after a bogey at the first hole.

Both players birdied the second hole but Smith bogeyed the fourth and sixth as Johnson got to within a stroke before the duo carded birdies at the par-five seventh.

Smith opened up a three-shot lead with a birdie at the par-four eighth, where Johnson carded the first of two consecutive bogeys to reach the turn four back and his hopes of becoming the first multiple winner on the LIV Golf series all but dashed.

Uihlein (69) got into the mix and was briefly one shot back of Smith, who was cruising along the back nine until a bogey at the par-three 16th, but the Australian reached the 18th three shots clear after a birdie at the penultimate hole coupled with a late Uihlein bogey.

Smith is the highest-ranked player to join