Successive world records tumbled in the dramatic women's pair semifinals as New Zealand's Kerri Gowler and Grace Prendergast emphasised their gold medal favouritism by blitzing the field to storm into Thursday's final.
In the first semifinal, boosted by the presence of a strong tailwind, unheralded Greek pair Maria Kyriacou and Christina Bourbou laid down the gauntlet by breaking Gowler and Prendergast's previous world record (6:49.08) in a time of 6.48.70.
Assuming that challenge, Gowler and Prendergast charged out to lead from start to finish in their second semifinal. Winning by two lengths, they regained their world record by finishing in 6.47.41. Russia was 2.8 seconds back in second, with Spain third.
Great Britian and Canada progressed alongside the commanding Greek pair from their semifinal.
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