WELCOME TO
SpinRateData
The purpose of this website is to use MLB pitcher spin rates to determine wOBA and success of MLB hitters.
All Pitch Data is from 2019-June 2021*
How Team Pages Work
These represent the ranges of spin rates for the specific pitch
Range 1
Range 2
Range 3
50
The numbers in the boxes are the percentage that the pitch is thrown there within that spin rate range
The color of the box correlates to the percentage:
0-5% - Red
5-7% - Yellow
>7% - Green
28
26.0%
The top number indicates how many pitches were thrown within that range.
The bottom number is the percentage relative to total pitches in all three ranges.
How Player Pages Work
What is wOBA?
Weighted on-base average is a more accurate and effective way to measure performance.
wOBA Chart
RATING
Excellent
Great
Above Average
Average
Below Average
Poor
Awful
wOBA
.400
.370
.340
.320
.310
.300
.290
From FanGraphs
wOBA Formula
wOBA = (.69xuBB + .722xHBP + .888x1B + 1.271x2B + 1.616x3B + 2.101xHR) / (AB + BB - IBB + SF + HBP)
-From FanGraphs
* The values associated with each hit changes every year so we average all the years that the player has been in the MLB