Tuesday, September 4, 2012

GB% by Base State

An interesting question raised at Fangraph's Q&A: Does GB% go up with a runner on first?

I queried retrosheet event files and sorted their recorded batted ball types by Base State and found the answer is: Apparently not.


BASE_STATE GB% FB% LD% PU%*
0 44.9 36.9 18.1 7.8
1 43.7 37.5 18.8 7.8
2 46.3 35.8 17.8 7.7
3 44.7 37.2 18 8
4 45.3 36.9 17.8 8
5 44.9 37.2 17.9 7.9
6 46.1 36.6 17.3 7.9
7 44.2 37.9 17.9 8.5


2002-2011, includes post-season data. Pop-ups are included in FB%, all bunts are excluded. 

I expanded on this table in a full article at BTB here:

http://www.beyondtheboxscore.com/2012/9/6/3295298/do-pitchers-induce-more-ground-balls-in-double-play-situations