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This document is provided
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American Contract Bridge League
2990 Airways Blvd.
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Memphis TN 38116–3847
901–332–5586
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Fax 901–398–7754
NOTE: to view the latest revision of the
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ACBLScore
Rev.(12/03) CCBAM.033 (PAGE 1)
__________________
BOARD-A-MATCH TEAMS - GENERAL CONDITIONS OF
CONTEST
These Conditions of Contest may not be changed
at any level of play
during the course of this event.
Lack of knowledge does not constitute cause for
exemption.
These conditions apply to all board-a-match
(BAM) team events. At the
North American Bridge Championships, there may
be additional specific
conditions for certain events. In such cases
the specific conditions
will supersede the general ones. These
conditions must be posted.
Sponsoring organizations may amend these
conditions for specific
events but such amendments must appear in all
printed tournament
schedules. Furthermore they must be posted
prior to the start of
event.
Sponsoring organizations may, with ACBL
approval only, amend these
conditions for a specific event.
The final decision on any item in these
conditions shall be made by
the Director-in-Charge. Furthermore, any issue
not specifically
covered will be resolved by the
Director-in-Charge.
ENTRY AND PARTICIPATION
1. Each team may consist of four, five or six
players. Entry may be
restricted by gender (all men, all women or
in the case of mixed
teams no more than three people may be of
one gender). In events
which have a masterpoint restriction the
team's entry will be
based on the player with the highest
masterpoint holding. However,
Life Master events require that all team
members be ACBL Life
Masters or its equivalent.
2. Each player must play at least fifty percent
of the boards, played
by the team to be eligible for either
session or overall
masterpoint awards. Other than to cover an
emergency, changes in a
team's lineup may not be made once play has
begun.
3. An ineligible player is disqualified. The
ineligible player's team
will be disqualified unless the
Director-in-Charge determines that
teammates were unknowledgeable about the
deficiency of the
disqualified member. Any team reduced to
fewer than three original
members due to disqualification of
ineligible players is
disqualified.
When a player(s) and team is disqualified
after the correction period
for the event has ended because the deficiency
was discovered then,
the disqualified team's position remains
vacant. In ongoing events,
teams move up one position as appropriate.
CCBAM.033 (PAGE 2)
__________________
PLAY
1. Sponsoring organizations must announce in
advance the type of
event scheduled. Options include open, Life
Master, events
restricted by either an upper or lower
masterpoint limitation,
flighted, stratified or strati-flighted. In
addition each event
may be segregated by requiring both pairs to
each be men, women or
that they be mixed (i.e one man and one
woman).
In flighted events groups are segregated by
masterpoint totals
(i.e A is Open, B is restricted to players
with less than 1000
MP's and C for players with less than 300
MP's).
In stratified events the three groups play
together but are ranked
both collectively and separately (i.e a C
player can win points by
ranking in A, B or C).
In strati-flighted events at least one
group is segregated and
another stratified (i.e A is Open, B is
stratified with the top
group 300 - 1000 and the second group 0 -
300).
2. Events may be run from one to six sessions
and may have cuts in
the size of the field after specified
sessions. Consolation events
may be run concurrently with the final
session(s) at the
discretion of the Sponsoring Organization.
3. Any player(s) that withdraws from a team may
not participate in
any concurrent championship event (two or
more sessions) while the
team is still competing in the BAM event.
They and players sitting out a session may
play in a concurrent
single session event. However if the event
is a Side Game Series
(Continuous Pairs) that session will not
count toward overall
placings in that event for either member of
the partnership. In
addition the pair will not be eligible for
to win gold points for
section tops at Regionals or NABC's.
4. A partnership is responsible for knowing
when their methods apply
in probable (to be expected) auctions. A
pair may be entitled to
redress if their opponents did not
originally have a clear
understanding of when and how to use a
convention that was
employed.
ADJUSTED SCORE
A strong effort must be made to achieve a valid
table result at each
table. When both tables achieve a valid result
and they have played
the identical deal, then the results are
compared in the normal
manner, with a BAM score for each team of zero,
half, or one.
A score assigned by a director or a committee
is considered a valid
result if it is assigned in total points prior
to matchpointing (140,
400, etc.) The scores awarded to each side need
not balance. The
assigned score or scores are then compared
against the result at the
other table in the normal manner to reach a BAM
score of zero, half,
or one.
CCBAM.033 (PAGE 3)
__________________
When the scores assigned to the opposing sides
are different, the BAM
matchpoints for that deal need not total one.
NOTE: Directors and
committees shall assign adjusted scores only to
the table at which an
irregularity occurred, NOT to the whole team.
An adjusted score at
one table shall not invalidate a legitimate
result at the other table.
If a board is unplayable for any reason, then:
1. If the board has not yet been played at the
other table, the
director shall substitute a new board if
practical.
2. If the board has already been played at the
other table, or if
substituting a new board is not practical,
the director shall
assign percentage scores to the pairs at the
affected table, as
follows:
a. If neither side is responsible for the
irregularity, each pair
receives a matchpoint score of 50%.
b. If only one side is responsible, that
pair receives 40% and
their opponents receive 60%.
c. If both sides are responsible, they both
receive 40%.
These percentage assignments are NOT
Average-Plus and Average-Minus.
A 60-40 assignment is exactly that.
3. The result obtained at the other table is
matchpointed across the
field of pairs in the same comparison group
who played the same
board. The matchpoint percentage scores
achieved by the pairs at
that table are added to the assigned
percentage scores at the
table with the irregularity, and:
a. A team that totals 120% or more receives
a win.
b. A team that totals 80% or less receives a
loss.
c. A team that totals more than 80% and less
than 120% receives a
half.
4. If a board is unplayable at BOTH tables,
then:
a. If both teams are responsible, they both
receive zero.
b. If neither team is responsible, they both
receive half.
c. If one team is responsible, it receives
zero, and their
opponents receive their TEAM percentage
of game. This is the
ONLY case in which percentage of game (of
any kind) is used.
5. Any team or teams responsible for an
irregularity requiring the
assignment of an artificial adjusted score
(percentage) shall be
penalized 1/4 board.
FOULED BOARD
Handling of a fouled board is similar to the
handling of an adjusted
score. When both tables achieve a valid result
and they have NOT
played the identical deal, then:
1. The director shall determine a matchpoint
percentage score for the
result at each table:
a. If the board has been played at least six
times in an identical
condition, then the board is matchpointed
across the field of
pairs who played the board in that
condition to produce a
matchpoint percentage.
CCBAM.033 (PAGE 4)
__________________
b. If the board has been played fewer than
six times in an
identical condition, the director shall
assign percentages, from
best to worst, as follows:
(1) Five times: 60, 55, 50, 45, 40
(2) Four times: 60, 55, 45, 40
(3) Three, two, or one time: 50% to each
pair
Any pairs tied at a particular score
receive the average of the
appropriate percentages.
2. The percentages of the two pairs on each
team are added together,
and:
a. A team that totals 120% or more receives
a win.
b. A team that totals 80% or less receives a
loss.
c. A team that totals more than 80% and less
than 120% receives a
half.
CONVENTIONS
The ACBL General Convention Chart will govern
bidding and playing
methods unless the Sponsoring Organization has
announced in writing to
the contrary.
SEEDING
Every effort should be made to seed all
sections of the field. In
general, each team should play against the same
strength field each
session. (Note: This is usually accomplished by
making random
adjustments in the starting position of one of
the seeded fields each
session.) While the Sponsoring Organization may
provide assistance the
final decision in all matters relating to
seeding the event will rest
with the Director-in-Charge.
QUALIFYING EVENTS AND CONSOLATIONS
1. Events of two or more sessions may be run as
some number of
qualifying sessions and some number of final
sessions. Consolation
events may be scheduled for non-qualifiers
at the discretion of
the Sponsoring Organization. Conditions
regarding the number of
teams to be qualified should be announced as
early as possible
during the qualifying session(s).
2. In order for a partnership to qualify for
the finals at least four
eligible team members must be present. If
not, an alternate
qualifier will be selected. From among
available teams the one
with the highest score in the qualifying
session(s) will be
selected.
3. A carryover will be calculated based on
scores in the qualifying
session(s). The scores of the teams
qualifying to the finals will
be reduced by using the percentage of teams
qualified over teams
entered. The maximum carryover cannot exceed
seven boards. For six
session events with two cuts, the maximum
spread for the middle
two rounds will be only four boards.
CCBAM.033 (PAGE 5)
__________________
4. The following tie breaking criteria will be
used in order until
the tie is broken:
a. Convert all fractions of boards to one (i.e
boards not lost)
b. If all teams involved played each other
the result of all boards
played among them.
c. Total points of all boards played in
common.
d. Total points of all boards played.
TARDINESS & SUBSTITUTIONS
1. Substitutes are subject to the discretion of
the
Director-in-Charge or his designee and may
not appreciably
strengthen the team. A substitute is not
allowed if a fifth or
sixth member of the team is present.
2. A qualified team which fails to seat all
team members of the
partnership ten minutes after the announced
starting time of a
finals will be replaced by the highest
available alternate
qualifier.
CORRECTION AND APPEAL PERIODS
1. The score correction period for player
errors expires at the
completion of play of the session following
the one in which the
error occurred.
2. For director errors the correction period
expires twenty four
hours after the completion of the event or
thirty minutes after
completion of the last event of the
tournament, whichever is
earlier.
3. For qualifying events the score correction
period for both player
and director errors expires one hour before
the announced starting
time of the first final session.
4. The appeal period of or for a Director's
ruling expires one half
hour after the completion of a session or
the starting time of the
next session whichever is earlier.
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