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					Originally Posted by outathm  How many systems other than 4 umpire have a 2BU? I guess 6 umpire does too. Read the entire post. | 
	
 Well, that would be U2 and no, I'm not assuming anything.  
AFAIK, he could have been referring to the umpire @ 2nd base which could be in anything other and a single umpire system.
 
But I really don't care, KR could have instructed them to do anything on that play especially since there is no published mechanic (at least, not at the ISF Umpire School)