Stolen Goods: Fastball Velocity and Pitcher Performance

Baseball Time in Arlington, like Fangraphs before them, performed an useful and insightful statistical analysis of the relationship between fastball velocity and other pitching metrics such as strikeouts, walk rates and home run rates. The data shows an interesting correlation between fastball velocity and various other aspects of a pitchers game.

The average findings from the data are represented in the following chart:

- - -	> 92.5 mph	90 - 92.5 mph	87.5 - 90.0 mph	< 87.5 mph
Avg. ERA	3.72	3.90	4.53	4.34
Avg. FIP	3.54	4.08	4.52	4.47
Avg. K/9	8.36	6.89	5.96	5.67
Avg. BB/9	2.89	2.96	2.78	2.72
Avg. HR/9	0.81	0.96	1.17	1.10
# Pitchers	19	47	24	17

Cool stuff all around. Worth checking out.