Fischer's Pro Line Sports

Welcome to the Official website for Chesterfield Baseball & Softball Association (CBSA)

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Rules

  About Us  /  Rules
Baseball Rules

SPRING 
Baseball Rulebook (updated 3/6/26)
Baseball Rules Grid (updated 2/5/26)

FALL 
Baseball Rulebook (updated 8/13/26)
Baseball Rules Grid (updated 2/5/26)

  • 9U/10U   no drop (Just stamp with 1.15)
  • 11U/12U  -10 (with BPF stamp)
  • 13U  -8 (with BPF stamp)
  • 14U  -5.5 (with BPF stamp)
Training League Rules
Softball Rules

Softball Rule Book (updated 8/13/26)
Softball Rules Grid (updated 3/6/26)

Bat Regulations

  • No drop restrictions
  • Must have 2 ¼” barrel
  • Must meet USA requirements (Rule 3, Section 1) and bear the Official USA/ASA emblem.
  • Baseball bats are not permitted.
  • Non-Approved Bat List
Training League Rules

Girls Training League Rules

7U Girls Special Rules

Bat Regulations

  • No drop restrictions
  • Must have 2 ¼” barrell
  • Must meet ASA requirements (Rule 3, Section 1) and bear the Official ASA emblem.
  • Baseball bats are not permitted.

CBSA

Contact Us

Mailing Address:
CBSA, PO Box 991, Chesterfield, MO 63006

Physical Address to fields: