4 August 2012 Last updated at 00:57

Olympic sailing: Ben Ainslie closes in on leaders

Great Britain's Ben Ainslie moves up the field of the Finn classification as the triple Olympic champion employs tactics to disrupt Danish rival Jonas Hogh-Christensen.

The 35-year-old used the opportunity of a considerable lead in Friday's final race to sail across the clean wind powering the Dane that allowed Pieter-Jan Postma of the Netherlands to take second place.

Ainslie now needs only to finish ahead of Hogh-Christensen, and no worse than seventh if Pieter-Jan Postma wins Sunday's finale, to become the most decorated Olympic sailor ever.

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