World ranking: 15th
Qualification: First in Americas
Best result: Pool stage
TAB odds: $501
Chances: For all their potential - and emergence as world sevens powerhouse - the Americans have never really kicked on to bridge the gap between also-rans and real contenders in the 15s format.
To add to their predicament, they've drawn the 'pool of death', with England, France and Argentina all semi-final candidates, and only Tonga looming as a winnable game. Anything more than that would be a major surprise.
England v USA, Kobe City, 10:45pm
France v USA, Fukuoka City, 8:45pm
Argentina v USA, Kumagaya City, 5:45pm
USA v Tonga, Higashiosaka City, 6:45pm