Arraez might be able to spell Donaldson quite a bit at 3rd. Frankly, I like Arraez more than Polanco at 2nd base. I'm going to give Polanco the benefit of doubt with his injury last year but he was terrible. Lounging at pitches, slapping the ball the other way etc. Either he just completely forgot his fundamentals or his injury was causing him not to apply proper balance and weight transfer hitting. I think he had like 3 hits in his last 50 at bats and his error (throwing) caused us a game in the playoffs. I'm glad we are getting back to a concept of defense. Simmons is a stud and so is Donaldson if he ever decides to consistently show up for work on the field.