No disrespect, but I am sorry - Ferrer is just not good enough to be a # 4 player in the world. There is a big gap between the top 3 and the rest right now. One guy will always get lucky in the draws - while facing Ferrer.
There needs to be someone who can elevate their game and get to what Nadal's level used to be. Otherwise going forward we'll have one boring SF in all the slams.