Froome or Contador?
Froome is looking better but I am not sure he is strong enough to get away as early has he will need to to make up significant time.
Contador is probably in the same position. I have no doubt he can accelerate away from Froome but I doubt he can then maintain the tempo required to stay away for a number of kms on the climb. However he does not need to, it is Froome that needs to get away and stay away if he wants to win the Vuelta
Rodriguez might be able to stay with these two but Valverde will not be able to stay with them if they go for it on the steepest parts of the climb. Aru will probably beat Valverde as might a couple of other riders.
Froome is looking better but I am not sure he is strong enough to get away as early has he will need to to make up significant time.
Contador is probably in the same position. I have no doubt he can accelerate away from Froome but I doubt he can then maintain the tempo required to stay away for a number of kms on the climb. However he does not need to, it is Froome that needs to get away and stay away if he wants to win the Vuelta
Rodriguez might be able to stay with these two but Valverde will not be able to stay with them if they go for it on the steepest parts of the climb. Aru will probably beat Valverde as might a couple of other riders.