Contador last vuelta, Nibali in the ‘16 giro are two recent examples. I find it hard to believe he just started doping yesterday and made insane progress. Why wait until now when it’s more suspicious to suddenly get a boost than being strong all the way? What would you need to take for such an improvement? Corticosteroids, high dose salbutamol, tramadol and a blood bag? Did they suddenly stop testing stage winners and top 10 in the giro? And if it’s all TUE, then that’s pretty much what they all do so why did Froome improve so much?
Alternatively, Froome came into the giro regularly TUE’ed up, a bit undercooked and then fell twice, but gradually recovered after rest day and two easy days. To say that’s physiologically impossible seems strange.