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					Originally Posted by Mmmm, Burger (C.J.)  They do?  I can't ever recall seeing a runner allowed to score on a ground-rule double.  I might provide discretion for fan-interference doubles, however.  And that's from a fan of a team whose fans are probably best positioned physically and knowledge-wise as to when to pick up (or let go) a ball in play along the stands. | 
	
 I think you are correct, they are limited to when there is fan interference.  The umps never get it right on those discretion calls.
TM