Fumble or Not?

[Foozeball]

I don't have a rulebook and I cant find a ruling anywhere else.

Lets Say Player QB starts to throw the ball but before his arm goes past his head it for some reason falls out of his hand or someone knocks it out. Is this a fumble or not?

My dad doesn't believe anything I say and I have to show this to him. So I know its a real simple question but..


O= Head
- = Ball
I= Before ball is throw

Qb Has Ball O-I

Ball falls out.
IS this fumble or not? Just tried to make it more clear.
Sorry If I have just confused you.