Rule Book – National Softball Association

The Players Association

Slow Pitch

Click here for changes from last year’s rule book.

Updated 12-22-25

Fast Pitch

California / Chinese Change Up — Clarification

Electronic Devices — Clarification

Click here for changes from last year’s rule book.

Updated 6-11-26

Click here for the NSA/BPA Policy on Reasonable Modifications for
Individuals with Disabilities.