CHAPTER V
THE AUCTION 

PART II
IRREGULARITIES IN PROCEDURE

SECTION TWO
CHANGES OF CALLS

LAW 25 - LEGAL AND ILLEGAL CHANGES OF CALL 

A. Immediate Correction of Inadvertency

Until his partner makes a call, a player may substitute his intended call for an inadvertent call but only if he does so, or attempts to do so, without pause for thought. If legal, his last call stands without penalty; if illegal, it is subject to the applicable Law.

B. Delayed or Purposeful Correction

Until LHO calls, a call may be substituted when section A does not apply:

1. Substitute Call Condoned

The substituted call may be accepted (treated as legal) at the option of offender's LHO  ; then, the second call stands and the auction proceeds without penalty. If offender's LHO has called before attention is drawn to the infraction, and the Director determines that LHO intended his call to apply over the offender's original call at that turn, offender's substituted call stands without penalty, and LHO may withdraw his call without penalty (but see Law 16C2).

2. Not Condoned

If the substituted call is not accepted, it is cancelled; and:

(a) First Call Illegal

If the first call was illegal, the offender is subject to the applicable Law (and the lead penalties of Law 26 may apply to the second call).

(b) First Call Legal

If the first call was legal, the offender must either,

(1) Let First Call Stand

Allow his first call to stand, in which case (penalty) his partner must pass when next it is his turn to call (see Law 23 when the pass damages the non-offending side), or,

(2) Substitute Another Call

Make any other legal call, in which case (penalty) the auction proceeds normally (but offender's partner may not base calls on information from withdrawn calls); the offending side  may receive no score greater than average-minus.

(c) Lead Penalties

In either case (b) (1) or (b) (2) above, the offender's partner will be subject to a lead penalty (see Law 26) if he becomes a defender.

The non-offending side receives the score achieved at the table.