East-West vulnerable.  
East deals.
                              North
                              S: K J 10 7 6 2     
                              H: A           
                              D: K Q 6 3     
                              C: 10 8    
            West                             East
            S: Void                          S: 8            
            H: K J 10 7 3                    H: Q 8 4 2    
            D: 10 8 7 4                      D: A 9               
            C: A Q J 6                       C: K 9 7 5 3 2 
                              South                         
                              S: A Q 9 5 4 3
                              H: 9 6 5      
                              D: J 5 2     
                              C: 4        
          The Bidding:  
                   East   South     West   North                  
                   Pass    2S        3H     4S  
                    5H     Pass     Pass    5S  
                   Pass    Pass     Pass
          Opening lead: 7H
     Here is an intersting hand from a Swiss Team event.  Each
partnership has 20 high card points and yet, they can each make
eleven tricks.  I held the North hand.  My Partner was Bill
Cornwell of Hubbard.  After East bid five hearts, the auction
came back to me and I had to decide how to continue.  
     A pre-emptive bid should indicate minimum defensive values. 
I thought that I could score two tricks against the five heart
contract.  I was not sure that my side could take eleven tricks,
but it did appear to be a very reasonable bid.  If we went down
one, it was very likely that they could make.  
     As it turned out, Cornwell was able to claim quickly and we
scored up +450.  When we compared scores with our team-mates, we
found that they had also bid to the five level and when the
opponents made the same five spade bid, they had doubled, so
their score was -650.  The difference was worth five IMPs
(International Match Points) for the opponents.
     There is a school of thought that says you should always
double the opponents when they outbid you at the five level in a
competitive auction.  If they make it, it is going to be a bad
board whether it is at matchpoints or at teams.  If they go down,
you should maximize your results.  Even though it did not work
out this time, I think my team-mates were correct in making this
double.  
_______________________________________________________