The Brazilian world champions and a stiff Copacabana wind knocked the American men out of the Olympic beach volleyball quarterfinals on Monday.

Alison and Bruno advanced to the semifinals, beating Nick Lucena and 2008 gold medalist Phil Dalhausser 21-14, 12-21, 15-9.

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Rebounding from a disastrous first set to force a tiebreaker, Dalhausser and Lucena fell behind 12-6 in the second. Then Alison and the crowd took over.

With a block to force match point and then a spike off Dalhausser for the winner, the man known as the “Mammouth” moved within one win of a second-straight Olympic medal.