Softball Rules

Kemptville Wildcats play in the Rural Otttawa Softball Association (ROSA) and follow their local rules of play. ROSA rules generally follow the Softball Canada standard fastpitch rules but with some minor modifications.

NOTE: Softball Canada does make updates to the fast pitch rules each year, primarily around player safety. For example, in recent years there has been a number of changes to introduce protective face masks for batters and pitchers. 


ROSA Local Rules v1.4

ROSA generally follows the Softball Canada rule book with some minor variations.


ROSA Local Rules v1.4 Summary (rev Apr 2022)

One page summary of the ROSA local rules by division.

Refer to the ROSA website for the latest versions of the ROSA Local Rules. You can also refer to Softball Canada Umpire Resources for more information.