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America's Cup: Team USA keeps victory hopes alive

21 September 2013 Last updated at 09:24 BST

Oracle Team USA have once again denied Team New Zealand victory, in the thirteenth race of the America's Cup in San Francisco.

The American team is fighting to retain the cup.

But Team New Zealand leads the series by eight races to three, with one more race victory securing them the overall win.

Alastair Leithead reports from San Francisco.

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