Shoring up the middle infield

So I just saw on Rotoworld that bobby Crosby's been placed on waivers by the A's, meaning that him and his 1yr 5 million dollar contract are up for grabs. He's not the MVP Gammons used to see in him anymore, but he's a useful player for a team like Seattle and I think it'd be worth picking him up.

His bat of course is a big concern, but even if it remains the same shitty bat it's been for the last several years, his wOBA is the same as Yuni's. Unlike Yuni, however,  there's some potential for growth there as he used to have some genuine power before the surgeries and can take a few walks. His low BA from the last couple of years was largely the result of him swinging at more out of zone pitches and consequently making more bad contact (reflected by a lower LD rate and slightly lower walk rate). I'm not sure why he's been doing it - maybe he's pushing or whatever they call it when they try too hard - but it's out of line with his career stats and seems fixable.

But of course the main reason to pick him up would be his defense. Based on UZR, he's a 0< x <+10 SS over his career, and PMR consistently places him in the top 50% of shortstops, in the neighborhood of guys like JJ Hardy, Yunel Escobar, and Gold Glover(!) Jimmy Rollins. So with the leather alone he'll be adding something like a win to the team total, with potentially more coming from his bat if he can get back on track a bit.

To recap, picking up Crosby means a little money, above average defense, the same or better offensive production, plus whatever return could be got from shipping Yuni to a team that uses the same scouts Raul Ibanez talks to about his defense. I like it.