WATCH: Australia's Pat Cummins' hilarious reaction during second ODI against South Africa

The Australian ODI cricket team finally ended their nightmare run in the format after defeating South Africa by seven runs in the second ODI of the three-match series at Adelaide. It was a hard-fought win for the Aussies, given for much of the game they were the second-best.

There were a number of talking points during this enthralling fixture, but one which stood out was the reaction of Australia's Pat Cummins after the dismissal of South Africa's David Miller.

The hilarious incident took place in the third ball of the 44th over. Marcus Stoinis' ball caught Miller on his pads, and the umpire gave it not out. Australia, who were desperate for a wicket, used DRS to review the decision. Replays showed that the impact of ball was in line, and it would go onto crash the stumps. 

Miller had to leave, and the Aussies were delighted. But amongst the celebration stood Cummins. With his teammates jumping up in joy, the pacer stood there with his mouth wide open, much in disbelief and shock. His reaction was such that even the Australian Cricket Twitter handle made fun of him.

Batting first, the hosts were bundled out for a mere 231, much due to some sensational bowling performance by Dale Steyn, Kagiso Rabada and Dwaine Pretorius, who took two, three and four wickets respectively.

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Chasing a paltry 232, South Africa looked certain for another win, and outright favorites to add more misery to Australia's woes. But in front of a packed Adelaid crowd, the hosts put a stunning bowling display to level the series.

Marcus Stoinis was the star of the show, taking 3 for 35 in his 10 overs as he rattled South African batting line-up. He got due support from fast-bowling duo of Mitchell Starc and Josh Hazlewood, who took two wickets each to help their side register a much-need win.

The series is tied 1-1 after two matches, and the final ODI will be played at Hobart, which will be followed by a one-off T20I.