Odds of my Side Suit Being Ruffed

Before you lead a card from a side suit and have not drawn all the trump cards – it is extremely helpful if you are aware of the probabilities (the odds) of your card being ruffed by the opposition

How do I Calculate the odds of one of my side suit winners being trumped

Probability Table

Sometimes you are in the position of need ing to play a side suit winner before you have drawn out all the trumps. Usually this will be either in order to reduce your trump length as holding long trumps is a disadvantage when an opponent holds a trump honor and can draw two of your trumps by playing only one of his own, or when performing a trump endplay. Anyway you may or may not wish to have this card trumped.

NOTE: This lesson is a short extract from the full featured interactive lessons in our Members Zone. Learn more about our extensive ‘Members Only’ features that you can use to lift your Bridge game.

Cards Opposition holdsvs. Rounds Played in the Suit
2 cards100%100%100%48%
3 cards100%100%100%22%
4 cards100%100%60%10%
5 cards100%100%32%4%
6 cards100%65%17%2%
7 cards100%38%8%1%

Table: The Odds of Being Ruffed compared to how many rounds of that suit have been played