On one side you have a 31 yr old formerly suspended Giro champ, who's sitting in 5th place, 3.19 off the pace, but who has looked frisky at times over the last 3-4 stages.

On the other you have a 37 yr old formerly retired 7 time Tour champ who's biggest energy expenditure over the last 3 years has been a handful of marathons and cross races. He's sitting 12th, 11.06 back, but led Levi in yesterday and looked the fresher of the two.

Discuss.