Because a softball is heavier then a baseball.
a softbal is not easy to throw- you probably are not throwing a real softball.
An underarm throw in softball is basically a pitch. If you watch a fast pitch softball team, you will see that the pitcher pitches underhand.
in softball you throw under hand in baseball you throw over hand. usually the fields in baseball are bigger than in softball.
Overhand Throw and Sidearm Throw
It's when you strike out tag out or throw out
They use softballs to pitch, throw, and hit with. but they are not soft
with a baseball glove and to throw it use your bare hand
it can be pitched as fast as you can throw it. throw it really fast!
its easier to grip, and aim the ball when you throw underhand