bootface

Hello: A few members of my duplicate club are using a 1D bid to signal 15-17 points with unbalanced distribution. The only rule that I am aware of (or that they care to describe) is that a 2D response is weak. Has anyone seen this convention and do they know what it's called. I presume they use the old Short Club instead of the Convenient Minor. Thanks

Thanks for all the responses and I now understand how match points are calculated. Nevertheless, it makes absolutely no sense. I bid and make what I bid. Why should I be penalized and my opponents be awarded for mistakes made at other tables? Okay, I can understand how these other tables have stretched another trick but only because their opponents were somewhat inadequate. Furthermore, why should my opponent get 72% for doing no more than following suit? It does not reward good bidding in any way. I'll stick to rubber bridge. The rules are a bit more logical and fair.

Hello: I've been playing bridge for decades but I'm new to competition bridge (BBO) and Master Points. I don't have a clue how the MP% is calculated. In a competition today, I had 12 high card points and my partner had 9. We bravely bid up to and made 4 hearts. However, the results showed that while we had earned 420 game points, our MP% was only 27.2% while the opposition got 72.8%. This doesn't seem to make any sense. In the next game, the opposition had about 28 high card points between them, they bid and made 4 spades and got 84% while we only got 16%. So, it seems you lose points for good play? Can anyone explain? Thanks