If that's skepticism, I'd hate to see glowing. One doesn't need to rely on gibbering morons like Arguello to find consensus on Russell's defense. And really, the argument against dealing Castro based on defense is based on all three of Russell, Baez and Alcantara being unable to play SS on the major league level. I'm no believer that there's any such thing as a can't-miss prospect, but the odds of that are pretty low. That sounds like a "he can stick at SS" report, not "he's the best defensive SS in the system." And yeah, Baez likely has a bit of a stronger arm, but Castro can make plays better and has better accuracy. He has the tools in his arm strength and range to be better, but he's got a lot to prove that that can actually come together, and it didn't really in the minors. Russell's the one, IMO, that has the best shot of making the case, and I just don't see the reports saying it's a slam dunk where he needs to push Castro off of SS.