Tri-Cities Baseball Softball Association (“TCBSA”) overall follows the rules of National Federation of State High School Associations (“NFHS”) with inclusion of National Championship Sports (“NCS”) as applicable, unless otherwise specified in TCBSA General Rules and Regulations. For the individual sports the order of precedence for rules is as follows:  

The Baseball ("BB") order of precedence includes:  

1. TCBSA League Rules (TCBSA General Playing Rules - Revised January 24, 2026)
2. NCS Rules 
3. NFHS Rules 
   

The Softball ("SB") order of precedence includes:

1. Softball Interlock Rules (Interlock Rules by Age Combined - Updated Fall 2025.pdf)
2. TCBSA League Rules (TCBSA General Playing Rules - Revised August 5, 2024)
3. NCS Rules
4. NFHS Rules
   
   

Tri-Cities -Softball All Star Tournament Rules
6U All Star Softball Rules
8U All Star Softball Rules
10U All Star Softball Rules
12U All Star Softball Rules
All Star Tournament General Rules