What has Jorge Polanco done to prove that he is MLB ready? He has a .745 OPS in AA to go along with below average SS defense. He might be a better option than Santana, because Santana has been the worst player in the majors this year, but I'd be much more comfortable with Escobar there than Polanco. For the record, I agree that Sano, Kepler, and Berrios, deserve to be promoted but I don't see it with Polanco.