With just a second separating Joaquim Rodriguez and Fabio Aru atop the leaderboard in the Vuelta a España, there's all to play for in the stage 17 time trial

Rarely has there been more to play for in a final week time trial at a Grand Tour, but on stage 17 of the Vuelta a España the whole race could be turned on its head and we may see a quite unexpected rider topping the leaderboard.

Tom Dumoulin heads into the 38.7km as the strong favourite to win the stage, but sitting just 1-51 behind leader Joaquim Rodriguez, and with no strong time trialists ahead of him, he could take over the race lead tonight.

Dr Hutch talks us through the tactics behind a long time trial