Dan, 
 
For JR/SR/Big League, the only two illegal pitches defined are: 
 
1. Delivering a pitch while not in contact 
 
2. A "quick return" pitch 
 
just as in OBR. As in OBR, these are both balks with one or more runners. 
 
The "ball for what is normally a balk" only applies to Majors and below, and it only applies there when there ARE one or more runners. 
 
JM
		 
		
		
		
		
		
		
		
		
	
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