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					Originally Posted by Manny A  Where does this mechanic come from?  NCAA?  I don't believe it's a FED or ASA mechanic, but I could be wrong.  
 And I'm a little confused by both of you having a catch.  Does that mean you both gave a visual signal?  Or did you simply agree it was a catch in some between-inning meet or post-game discussion?  In ASA and FED, if I've got the plate and I don't see my partner busting inside on this, I'm not making any call initially because I'm assuming he's got it.
 
 I agree with the others.  It's especially imperative on a trouble ball like this for the umpire to make an emphatic verbal and visual call.
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 Your default on this play should be the other way around... unless your partner calls you off (I'm going!), it's your call.
But in either case --- whoever's call it is should call the out when they see an out.  Loudly if close like in the OP or if touch matters on a tag - quietly if it's a can of corn.  (Note ... is there EVER a time that we have an out on a close play and don't call it verbally?)