Contrary to popular belief, I think Fed plays better under pressure than Djokodal, they just have more stamina, that's why Fed starts to make mistakes, either gets tired or is afraid of being tired, so he goes for too much. So, this means for both of them this basically becomes a final and this favours Federer mentally. Remember, in all finals Fed did better vs Rafa than he did in semis.How will that change, if at all, how Fedal play their match?
That's why on fast courts in bo3, he has no issues versus anyone, since stamina is not the problem.