Leaping

[Antonella]

I don't know much about male softball (not very practised in Italy and not at top level)... that's why my question will sound stupid to most of you...
Is leaping admitted in male softball?
Of course I perfectly knot it is NOT allowed by the rules. My question is about 'tradition'.
Why am I askin' this? Because I frequently see pictures with softball pitchers 'flying' before the release of the ball.

Thank you and ciao