2010 League Averages by Pitch Type

I have been wanting to do this for a while, and I've finally gotten around to it.  The tables below show the league averages by pitch type for many of the metrics I typically use here. 

	#	Swing Rate	Whiff Rate	Zone Rate	Chase Rate	Watch Rate	Foul Rate	Ball Rate	nsCall Rate	RV/100	xRV/100
Fastball	262,588	.444	.162	.479	.268	.364	.431	.356	.360	-0.14	-0.21
Sinker	130,440	.441	.122	.459	.284	.374	.381	.362	.352	+0.00	-0.02
Slider	98,164	.474	.313	.419	.345	.347	.314	.371	.295	-0.73	-0.76
Changeup	79,370	.499	.288	.372	.363	.273	.297	.386	.231	-0.28	-0.15
Curveball	63,580	.396	.281	.403	.294	.453	.317	.413	.316	-0.26	-0.34
Cutter	39,796	.488	.209	.456	.318	.309	.387	.352	.312	-0.36	-0.42
Splitter	9,261	.515	.352	.352	.392	.257	.304	.390	.197	-0.82	-1.04
	697,108	.453	.208	.445	.302	.358	.373	.368	.327	-0.24	-0.28

	GB Rate	FB Rate	LD Rate	PU Rate	HR/FB	wOBAcon
Fastball	.385	.329	.196	.091	.103	.363
Sinker	.522	.245	.188	.045	.109	.353
Slider	.444	.296	.178	.082	.112	.345
Changeup	.482	.267	.180	.071	.116	.336
Curveball	.499	.256	.185	.060	.114	.346
Cutter	.448	.272	.197	.084	.106	.353
Splitter	.566	.230	.159	.044	.137	.338
	.450	.288	.189	.074	.109	.353

Yes, the run values are pretty funky.  They're out of date and the expected values don't perfectly add up to the actual ones.  This is something for me to fix for this year.

nsCall is called rate on non-swings, or called strikes over called strikes plus balls.  It's a different way of showing Harry Pavlidis's B:CS metric.  

Four-seam fastballs have the lowest HR/FB of any pitch.  Hanging breaking pitches get hit out the most.

Speaking of HR/FB, my values add up to be pretty different from BIS's at Fangraphs.

The "curveball" group contains a few eephus pitches as well (I have some from Vicente Padilla, Chad Billingsley, and Roy Oswalt).  

I also have knuckleballs (including Tim Wakefield, R.A. Dickey, and Charlie Haeger) and screwballs (Danny Herrera and Dallas Braden) classified, but didn't include them here because of the sample size.  Also, generic fastballs ("FA") that were neither specified as a four-seamer or sinker were not included.

UPDATED 7/27/11