Nibali no doubt used a lot of energy today. That could maybe show later. I'm thinking Valverde will probably be sore as well for a little. AC will be fine.
Kwiatkowski had to chase a lot. Lost contact early on and had to fight back and then he had a mechanical in the second to last cobbles-section. But on the other hand, he gains more and more confidence in his abilities. Not sure if he can keep his form for 3 weeks this year?
So for the moment I think he's fine but what about in 12 days?