Rizwan made an unbeaten 74 as Pakistan chased down a target of 189 with one ball to spare. Their previous highest T20 chase was 188 against Australia in Harare in 2018.
It was also Smith’s first century in Australia since December 2017 in a drawn Test against England at the Melbourne Cricket Ground.
The Pakistan captain hit a stroke-filled 103 off 104 balls and shared a second-wicket partnership of 177 with Imam-ul-Haq, who made 70. But Babar's dismissal started a collapse in which fast bowler Anrich Nortje took four wickets in four overs.
Social media immediately went into overdrive with cries that de Kock had flouted the law on fake fielding, which states that "it is unfair for any fielder willfully to attempt, by word or action, to distract, deceive or obstruct either batsman after the striker has received the ball."
The coronavirus may have struck shortly before the English cricket season was due to start but it threatens to have major implications for the game worldwide.
The world governing body of the sport, the International cricket Council (ICC) said it had also looked into the recent allegations and found no reason to doubt the integrity of the 2011 final, won by India.
Though there was a rearguard action from Hardik Pandya, who got his highest ODI score (90 off 76 balls) and added 128 runs for the fifth wicket with opener Shikhar Dhawan (74 off 86), Australia's total of 374 for six wickets in 50 overs.
The news will be a massive financial blow to embattled Cricket South Africa (CSA) and also casts doubt on their ability to host future tours, with Sri Lanka, Pakistan and Australia all set to play in the country in the coming months.
Dhoni, 39, called time on his 16-year-old international career Saturday with a cryptic message on his Instagram post that read "From 1929hrs consider me as retired."