Andy007 said:
Yes there is reason because the guy can't stay healthy. He has chronic arm/oblique problems. Advanced stats make this guy look a little better than he actually is too. He's coming to an awful stadium with terrible turf; he'll be lucky to get 300 at bats this upcoming season.
I mean, even if you're right about health issues that's more of a reason why I wouldn't bet my house on him being as valuable as Melky last year and not so much a reason as to why he's not capable of it.
Also, here are his games played and PA's by year(minors and majors):
2010: 121/420
2011: 112/470
2012: 139/553
2013: 135/484
2014: 93/334
He also had several seasons over 500 PA's exclusively in the minors. I tried finding data for how often he's been on the DL but couldn't. In 2013 though of his 126 games in the field he only started 109 of them and only finished 93. That, which explains his relatively low PA/Games played ratio that year, indicates that what might look like health problems in his numbers could also be just his manager choosing not to play him. Either way, it doesn't look like he's incapable of playing a full season.
Regardless, maybe it's just me but I don't think that home/away splits are really advanced stats. He's shown he can be a productive offensive player on the road, he's moving to a good hitting park. If health is the only real obstacle to him contributing at a similar rate that Melky did then even the 400+ PA's he's shown himself fully capable at the major league level is a pretty solid return here.