The Arizona Diamondbacks, after falling back to an even .500, remain in an unpredictable Deadline limbo. While GM Mike Hazen has said he intends to buy and add to the roster, there’s no way to be certain Arizona won’t fall into a hole that puts them out of contention. In such a situation, the D-backs would find themselves the owners of multiple appealing rental trade pieces — pieces contending teams would greatly desire. According to MLB.com reporter and insider Mark Feinsand, first baseman Josh Naylor would be a perfect candidate for Arizona to sell.