in case spain will play singles with Ferrer and Almagro then the fourth/fifth rubber would be Berdych-Ferrer as they are the highest ranked for their nations right? this scenario can be very dangerous for Berdych as I would play against Ferrer after having to play rubber1 and doubles... yes would be favourite but I wouldn't right off a possible Ferrer win over him.
When I was thinking about DelPo's withdrawal, I though about possibilities to affect the OOP. Think about this: Czechs name Sexy/Rosol and Minar as their singles player, just to substitute Minar with Berdy, then OOP is as follows:
Rubber 1 or 2: Sexy/Rosol v. Almagro/?
Rubber 2 or 1: Minar (subst. to Berdy) v. Ferrer
Rubber 3: Doubles
Rubber 4: Sexy/Rosol v. Ferrer
Rubber 5: Berdy v. Almagro/?
That'd mean Minar couldn't then be used to replace anybody later in the tie. Am I strategically wise or just a very bad guy?