STARTERS: Skill changes 2012 to 2013

Analyzing a starting pitcher's skill changes from 2012 to this point in 2013 can help us validate or dismiss the surface stats they are posting.

Let's look at the SP with the widest skill changes from last season by indicator.

  • BPV - 2012 to 2013 YTD*
    
    Name                League  BPV '12  BPV '13  Diff
    ==================  ======  =======  =======  ====
    Danks, John             AL      6      107    +101
    Keuchel, Dallas         AL     -9       86    + 95
    Harang, Aaron           AL     20       97    + 77
    Chatwood, Tyler         NL      6       61    + 55
    Harvey, Matt            NL    101      154    + 53
    Darvish, Yu             AL     98      152    + 53
    Porcello, Rick          AL     69      121    + 52
    Deduno, Samuel          AL   ...

Almost!

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