since we're going to be a bad team for the immediate future anyway i'm more than fine leaving him at SS to see if he improves, but early returns are moderately troubling looking at RZR: for the past two seasons, amongst the 23 qualifying SS, he's the 3rd worst at making plays in his zone (more or less "routine" plays) but he's in the top third for % of his plays made out of zone, which would suggest he's got poor instincts and good athleticism. that's already the perception about him, but the fielding data also backs that up UZR considers him a -6 SS to this point, which is actually fairly promising, all things considered, but TotalZone paints the grimmest picture, labeling Castro a -17 fielder thus far if you believe the latter is the more reliable of the two metrics, then there's little chance he can stay at short long-term without being a considerable detriment