I'd be a bit cautious in assuming Sano is simply going to improve on last year. He may, and I even think that's likely, but he may struggle. There will be a book on him in 2016, and he is going to have to make adjustments. All major leaguers do. Given his track record, I think he's likely going to be fine, but sometimes that kind of stuff can take a guy down for a few months (or an entire season). Sano wouldn't be the first elite prospect to have success and then struggle the following season. As for Arcia, I'm really happy that he seems committed this offseason. I really hope that this commitment is more than just BP and hitting the weight room, but also working on his OF defense, where he desparately needs to improve. The kid played CF for a bit in the minors. Yeah, I know it was rookie ball, but there's no reason to think he cannot be an average defender in his 20s. He's athletic enough to do it.