Fiji capitalised brilliantly on an ill-disciplined performance from Australia to grab their first win against them since 1954 and jump ahead of the Wallabies in the tightly contested Pool C.
Looking confident from the whistle, Fiji conceded just seven penalties compared to 18 from an Australian side who often looked lost without their injured skipper Will Skelton.
With Fijian kicker Simione Kuruvoli on form - the scrum-half landed five from five before going off - the Wallabies struggled to get a foothold in the game. An opportunistic try from in-form Mark Nawaqanitawase and a late flurry from replacement winger Suli Vunivalu briefly gave the men in green and gold hope. But having built up a 22-8 lead, with Josua Tuisova going over early in the second half, Fiji held on comfortably.
The result puts both Fiji and Australia on six points, with Fiji ahead thanks to their head-to-head record.