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IRB Sevens World Series - USA Sevens
The IRB Sevens World Series, known officially as the HSBC Sevens World Series since the 2010-11 season through sponsorship from banking group HSBC is an annual series of international rugby sevens tournaments run by the International Rugby Board featuring national sevens teams.
Teams compete for the Sevens World Series title by accumulating points based on their finishing position in each tournament.