Polanco has mastered the charge and flip on slowly hit grounders. Other throws have been more of a challenge. I still think his future is elsewhere than shortstop, especially if Lewis is all that he's supposed to be. With subpar defenders at each and every spot in the infield (Sanó, Polanco, Arraez, Cron), it is hard to see a way that defense will improve dramatically. However, I think fatigue is an issue with Polanco. I don't think that using Adrianza at short frequently in the near future is a bad idea. Addressing defensive deficiencies in the off-season should be a must.