♠AJ9xx
♥ -
♦AJxxx
♣Qxx
♠KT
♥Qxxx
♦QTxxx
♣Kx
Partner opened 1♠ and I landed in a pretty good looking 5♦ contract. I was pretty happy, we avoided 3NT and are light on high cards, so I was thinking this could be a good score. The opening lead is a spade, obvious stiff, RHO playing the queen. So I think, hahah I am not risking the silly finesse, I will play safe to guarantee +600. ♦Q, not covered, ace from dummy. RHO shows out and also turns up with the ♣A, down 1. Meanwhile the underbidders and autofinessers are all plus of course. We observed that I would have been much better off bidding six, forcing me to take the winning hook.

Later, we held a combined 13 high card points and successfully stole the board for -50. For an average. grrrrr
edit: I guess this doesn't really have much to do with matchpoints. Still annoying though.