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1. 

   purpleReign
   Member

   Hi there,

   I am very new to Fangraphs.com, but even just the brief time that I have spent here so far, I have learned a ton and I already Love the site. I am still reading up on some of that stats that you guys calculate, but I was wondering if you kept track of some type of stat which best resembles the following.

   Is there a stat which calculates the number of Plate Appearances (PA) in which the batter contributed positively to their team's WE compared against their overall number of PA? I am thinking more along the lines of an average which calculates the percentage of plate appearances in which the player increased the teams chance to win.

   Is there an existing stat which calculates this? Or is there a better stat that I should be looking at?

   Posted 1 month ago #
2. 

   tangotiger
   Member

   What you are asking for is called: OBP (on base percentage).

   It's fairly difficult to increase the chances of winning by making an out (though it's possible). And it's hard to decrease the chances of winning by getting on base (though it's possible).

   OBP would make more sense if it includes reaching base on error.

   Posted 1 month ago #
3. 

   purpleReign
   Member

   Thank you! That's really funny, I have never thought of OBP in that way before. Thanks again!

   Posted 1 month ago #
4. 

   JoeR43
   Member

   Hey Tom, close but not necessary.

   Example: Runner on 3rd, 1 out, B9th. Sac fly to CF, Runner scores. WPA = +.17, OBP goes down. Also, the WPA with a runner on 3rd in the B9 with 1 out and down by 1 is .412. This goes up to .532 with a sac fly. And of course, WPA goes up when you reach on an error (I believe), as well as some other special situations.

   So for all intensive purposes, .OBP * PA is fine, but usually players will contribute to winning a couple more times a season than that number.

   Posted 1 month ago #
5. 

   tangotiger
   Member

   I did say this:

   It's fairly difficult to increase the chances of winning by making an out (though it's possible). And it's hard to decrease the chances of winning by getting on base (though it's possible).

   Joe, how many more qualifications did I need to make in two sentences, for you not to have said:

   Hey Tom, close but not necessary.

   I mean, that's what I said!

   Posted 1 month ago #
6. 

   JoeR43
   Member

   My bad Tom, I was at work and just skimmed your post.

   Posted 1 month ago #

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