ACBL07B – Defense: Top of Sequence Revision Ward Trumbull
Apr 30, 2007
Page 1 of 1
The opening lead rules for “top of a sequence” depend on whether it
is a suit or notrump contract.
1. Suit Contracts
In this case a sequence of only two cards is required, preferably
Examples: ace from A K x x
king from K Q x
queen from Q J x x x
jack from J 10 x x
2. Notrump Contracts
For notrump contracts, a top of a sequence of 3 is preferred. Such
as AKQ, KQJ, QJ10, etc. Eddie Kantar calls them a “perfect
sequence”, and Charles Goren called them a “complete sequence”.
However, both also noted that a 3 card sequence missing the third
card should also be included.
Examples: ace from A K J x x (queen missing)
king from K Q 10 x (jack missing)
queen from Q J 9 x x (10 missing)
jack from J 10 8 x (9 missing)
There is one exception. That is when you lead from a 6+ card suit.
In this case only a two card top of sequence is required.
Examples: king from K Q x x x x
queen from Q J x x x x
Note: From A K x x x x, you should still lead the fourth card down.