quote:
Originally posted by 3bpitcher:
I was just wondering what kind of changeup everybody threw and how many mph difference there was between it and your fastball. I throw a circle changeup and on a good day it is about 12 mph less. I throw high 70s. Also, how effective is it? How often can you get it in for strikes?
Never trust absolute MPH differences.
The best pitchers (e.g. Greg Maddux) have an 8-10 PERCENT (not MPH) difference between their FB and their CU. It's important that you think in terms of PERCENT and not MPH.
A CU that's 10 percent slower than one's fastball is fast enough to not obviously be a change-up but still slow enough to screw up a hitter's timing.