STARTERS: BPV none on/runners on, 2017

Our research has confirmed that there are significant skill differences among pitchers when throwing with the bases empty compared to with runners on base.

We can show this visually by comparing the skills of pitchers in those two situations over the last five seasons and comparing them with the average overall skills posted by starting pitchers during the same period:

Here is an updated analysis with the detailed stats and skills for this split over the last four full seasons and 2017 YTD:

• None On Stats & Skills: 2013 to 2017 YTD*
  
  Year  League  ERA   WHIP  Ctl  Dom  Cmd  HR/9  GB%  H%   hr/f   Ball%  BPV
  ====  ======  ====  ====  ===  ===  ===  ====  ===  ===  =====  =====  ===
  2013      AL  1.15  1.35  2.9  8.1  2.8   1.2  43% ...

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