If Rendon is hurt, why wouldn't they consider Noll? If he hits enough to make the Opening Day roster, you think you might at least consider him.
The reason to consider Sanchez has nothing to do with offense. It's that they have no backup IF, and especially SS at all right now. Seriously, what happens if Difo gets hurt in a game now? Dozier? Then Kendrick at 2B and Gomes at third?
