World ranking: 10th
Qualification: 2015 semi-finalists
Best result: Third 2007
TAB odds: $41
Chances: The Pumas have flattered to deceive for years, threatening to burst into the top echelon, but never quite managing that.
At times, their Rugby Championship form has promised more, and they can progress past pool play, if they strike the flaky French on the right day.
France v Argentina, Tokyo, 7:15pm (live updates)
Argentina v Tonga, Higashiosaka City, 4:45pm
England v Argentina, Tokyo, 9pm (live updates)
Argentina v USA, Kumagaya City, 5:45pm