Forums | FanGraphs Baseball » Site Suggestions

1. 

   OlStubbleBeard
   Member

   I apologize if I'm missing something but there seems to be a discrepancy between the BABIP numbers on Baseball-Reference and here on Fangraphs both for this year and past years.

   Are they caluclated differently?

   Posted 6 months ago #
2. 

   OlStubbleBeard
   Member

   For example,

   Rich Harden on B-R '07 .254 '08 .252 '09 .270

   Harden on Fangraphs '07 .248 '08 .265 '09 .292

   Line drive rates also vary but I assume that data is more "subjective"

   Posted 6 months ago #
3. 

   David Appelman
   Founder

   For pitchers I use (H-HR)/(IP*2.82+H-SO-HR).

   It has like a .97 RSME for pitchers over 50 innings pitched, so it's going to be extremely similar. I think there's been more TBF data added for historical data recently, maybe it's time start calculating it the same as we would for batters.

   Posted 6 months ago #
4. 

   rileydog22
   Member

   Why 2.82 rather than 3?

   Posted 6 months ago #
5. 

   SoxScout
   Member

   rileydog22;4319 Why 2.82 rather than 3?

   Pretty sure it is to account for outs made on the bases and double-plays.

   Posted 5 months ago #
6. 

   j reed
   Member

   so where'd you'd get the 2.82. Is there a proof or something that show how this is derived

   Posted 3 months ago #
7. 

   JoeR43
   Member

   Why not just use the same formula for BABIP against as BABIP?

   Posted 1 month ago #
8. 

   tangotiger
   Member

   David already said:

   "I think there's been more TBF data added for historical data recently, maybe it's time start calculating it the same as we would for batters"

   Posted 1 month ago #

RSS feed for this topic

Reply

You must log in to post.