Yeah I just this, hope it's nothing serious and comes back stronger on clay. Even if it's just a niggle he's right to pull out of Miami.
It looks like no Murray and Djokovic which I think means Stan is top seed.
Murray as well as Djokovic could easilly skip clay masters before Rome too, by withdrawing or losing earlier therein.
All he needs is RG and Wimb thereafter and then after summer holidays USO.
No.1 position is not his priority.