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NSA Slow Pitch Umpire Manual updated 01-10-2013 with diagrams
NSA Fast Pitch Umpire Manual
FIELD DIMENSION DIAGRAMS
Adult Slowpitch Field Dimensions
Fastpitch Field Dimensions
2013 NSA Rulebook - includes all rule changes
2013 Slowpitch Section of Rulebook
2013 Fastpitch Section of Rulebook
Slow Pitch Rule 3 Amendment - Effective 4/22/2013
2013 Slow Pitch Rule Changes - updated 11/5/2012
2012-2013 Fast Pitch Rule Changes
Beginning with Championship play in 2014 (Championship play includes all NIT’s, State, Regional, World and Super World Series tournaments) the .52 c.o.r. 275lb compression ball will be mandatory. Beginning 1/1/15 the .52 c.o.r. 275lb compression softball will be mandatory for all NSA Play. NSA recommends that all Silver and Bronze play use the .52 c.o.r. 275lb compression ball beginning 1/1/2013
Multi Layered Softballs will be BANNED effective June 1, 2012.