Wiggins defends Tour of Britain lead

Sir Bradley Wiggins remains in pole position to win the Tour of Britain after coming through a difficult day in the Welsh hills.

Wiggins and his Team Sky team-mates defended numerous attacks - including a late dart by general classification rivals Dan Martin and Nairo Quintana - to maintain his 37 second overall advantage.

Ireland's Sam Bennett took the stage five win in the shadow of Caerphilly Castle after a day of spiteful climbs on wet and windy roads, while Wiggins finished safely in the 15-strong front pack in seventh place.

Friday's sixth stage looks set to be decisive in the battle for the gold jersey with weekend finishes in Guildford and central London favouring a bunch sprint finish.

Last year's Devon stage decided the race and this year sees the peleton tackle a 137km km route between Sidmouth and Dartmoor, with a category one summit finish on Haytor.

Wiggins is attempting to become only the second British rider to win the Tour since the race was reconstituted in 2004, following last year's winner Jonathan Tiernan-Locke.

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