The makeshift Wallabies have ended their spring tour on an incredible high with an epic 39-34 comeback win over Wales in Cardiff.
Winger Mark Nawaqanitawase and replacement hooker Lachlan Lonergan were the heroes as Australia fought back from 21 points down with 27 minutes remaining to snatch victory from the jaws of defeat at the Principality Stadium.
Wales were leading 20-13 at half-time.
Nawaqanitawase bagged a second-half double and also played a key role in the lead-up to Lonergan's match-winning try, two minutes from full-time, as the Wallabies recovered from 34-13 down.
With nine players, including big guns Michael Hooper and Taniela Tupou, ruled out of the tour, Rennie only had 25 players to choose from for his match-day 23.
Adding to the drama, the Wallabies lost skipper James Slipper to a head knock in the first half.
The improbable victory relieved pressure on Rennie, who had been staring down the barrel of presiding over Australia's worst win-loss record in a calendar year since 1958 following a hat-trick of narrow tour defeats to France, Italy and Ireland.
Instead, it is Wales coach Wayne Pivac who ended the match trying to save his job.
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