STARTERS: Fastball velocity and Dominance rate
May 12 2013
It seems intuitive that an increase in fastball velocity would lead to more strikeouts when it comes to starting pitchers.
In fact, we cite fastball velocity increases as a good thing without thinking twice about it.
Conversely, a decline in fastball velocity commonly is used as a reason for concern.
Before accepting these conclusions as truths, let's analyze the historical link between fastball velocity and Dominance (K/9) rate.
Here is a scatter plot showing the relationship between those two variables over the past four seasons among starting pitchers (min 40 IP).
- There is a positive correlation between fastball velocity and Dom, but it's not as strong as you might think. Its correlation coefficient of r = 0.41 suggests a...
Almost!
You’re just a few clicks away from accessing this feature and hundreds more throughout the year that have a singular goal in mind: Winning your league. Subscribe to BaseballHQ.com here!
Already a subscriber? Sign in here
More From Starting Pitchers
Drew Rasmussen's more good-than-great skills in 2025 suggest his sterling surface stats could be due for big corrections in 2026.
Mar 7 2026 3:09am
Mar 7 2026 3:09am
Ben Brown might be the best starting pitcher profit play in the game at his current market price.
Feb 28 2026 3:05am
Feb 28 2026 3:05am
Ian Seymour's intriguing command pillars make him an excellent LIMA Plan target heading into 2026.
Feb 21 2026 3:07am
Feb 21 2026 3:07am
Ben Brown's disappointing 2025 season hid a collection of intriguing skills, making him a young starter to watch this spring.
Feb 14 2026 3:05am
Feb 14 2026 3:05am
Former ace Sandy Alcantara finally looked healthy late in 2025, giving hope that he can recapture his ace-like form in 2026.
Jan 30 2026 3:05am
Jan 30 2026 3:05am
