At least 9
13 defensive players
Many college and professional softball players can throw a fastball 60-70 mph.
10 teams are in fast pitch softball.
there are many types of ways to play softball. there is slow pitch and fast pitch. tee ball and coach pitch but fast pitch is where they go in a hole wind up and pitch the ball to the hitter.
slow pitch softball requires 10 players, 6 infield and 4 outfield.
There are nine players at a time on the field for fastpitch softball and ten for slow pitch softball