Should Rafa be struggling against wawrinka on clay?
Wawrinka had never even won a set against Rafa on any surface prior to the back injury at the Australian open.
Again looking sharp against a 30 year old isner who can't move is not exactly a huge achievement.
Dimitrov demolished wawrinka in Monte Carlo.
Rafa should be able to beat wawrinka on one leg on clay.