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			Chuck,
 Once the pitcher breaks contact with the rubber he is a fielder.  Pretty hard if not impossible to fake a throw to third without breaking contact with the pitching plate.  On any throw from the rubber to a base he must step towards that base.
 
 Re "having to throw to first": yes, if he is in contact with the rubber.  If the pitcher properly disengages, he can throw or not throw as he sees fit, because now he's a fielder.  In this case, faking the throw to third would fulfill the properly disengages part--as long as he steps towards third.
 
 
 Dan
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