The offence to defence ratio (ODR) refers to how a hand will perform differently when it is played as a declarer or a defender. A high ODR means that the hand is better played as a declarer, while a low ODR means that the hand is better played as a defender. It is not a formalised concept and has no clear mathematical formula for it.

For example, the following hand has a very high ODR:


It can be played greatly in s, guarantees 7 tricks even opposite a partner with no values, but can take at most 2 tricks if the contract is in a suit other than s.

In contrast, the following hand has a very low ODR:


No matter what suit it is played in, the short suits generally perform well because they have high honours in them.

Normally, the following are good for an offensive hand:

  • long and solid trumps
  • side shortness

and the following are good for a defensive hand:

  • side honours
  • balanced shape

The ODR of a hand is an important thing to consider in competitive auctions, when deciding whether to bid on, or double them for penalty.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.