Cape Town - The USA have shocked the South African Sevens team to finish the Pool stage of the London Sevens unbeaten.
The USA won 21-12 after trailling 12-0 at half-time.
The USA ended top of Pool D, with the Blitzbokke in second. The Blitzbokke will play the winner of the Fiji v Canada match in the Cup quarter-finals.
Earlier in the tournament, Neil Powell's men beat France 28-7 and Portugal 19-0.