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The Draw and Seeding

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					               REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW


The Draw and Seeding

It is not one of the Referee's tasks to do the draw. This is performed by the tournament
committee or possibly by some higher sanctioning body (eg. NZBF or IBF).
However, it is most important for the Referee to be well informed on the manner in which
the draw and seeding are conducted, as it is one of the Referee's responsibilities to
ensure that these are done in a fair and correct manner in accordance with the
appropriate procedures.

The following are the essential sections from the IBF Tournament Regulations which
prescribes how the draw and seeding will be carried out:

10.   THE DRAW
 10.1 The draw for all knock-out events shall be made in the manner set out below. No
      dummy entry is permitted.

 10.2 In all International Open events and multi-sports events requiring sanction by the
      IBF, the seeding of the draw shall be done by the IBF. To accomplish this, all
      entries shall be forwarded by the organising committee to the IBF office.
1st round             2nd round               Final        Winner            DIAGRAM 1
     A
                        B
     B
                                          D
     C
                        D
     D
                                                             D
     E
                        F
     F
                                          F
     G
                        H
     H

 10.4 The draw shall be conducted as follows:

         10.4.1         When the number of playing units is 4,8,16,32,64,128, or any higher
         power of 2, they shall meet in pairs in the order drawn, as in Diagram 1, for eight
         playing units.
         10.4.2         When the number of playing units is not a power of 2, there shall be
         byes in the first round. The number of byes shall be equal to the difference
         between the next higher power of 2 and the number of playing units.
         (eg. with 17 playing units, there are 32 - 17 = 15 byes).
         10.4.3         The byes shall be placed as in Diagram 2.




                           New Zealand Badminton Court Officials Manual          Section F3
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              REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW


10.7   To ensure even strength throughout the draw and to avoid players from one
       Member Association meeting in the early rounds, the draw may be seeded or
       arranged subject to the following restrictions:

       10.7.1 A maximum of sixteen seeds if there are 64 or more entries;
              a maximum of eight seeds if there are 32 to 63 entries;
              a maximum of four seeds if there are 16 to 31 entries;
              two seeds if there are less than 16 entries.

       10.7.2 The seeded entries shall be selected as the best in the event at that time.
       10.7.3 Seeded entries shall be placed as detailed in the example draw in Diagram
              2. Seeded entries in the top half of the draw are placed at the top of their
              sections (eg. eights or sixteenths), and in the bottom half of the draw at the
              bottom of their sections.

 10.8 The top 2 seeded entries shall be dealt with as follows:
      10.8.1 Number 1 placed at the top of the draw.
      10.8.2 Number 2 placed at the bottom of the draw.

 10.9 The other seeds shall be dealt with taking regard of the requirements of Regulation
      10.10.
      10.9.1 Numbers 3 and 4 drawn by lot to the remaining two quarters of the draw.
      10.9.2 Numbers 5 to 8 drawn by lot to the remaining eighths of the draw.
      10.9.3 Numbers 9 to 16 drawn by lot to the remaining sixteenths of the draw.

10.10 Separation of entries:
      10.10.1      The first and second ranked entries from any Member Association
            shall be drawn by lot in opposite halves of the draw.
      10.10.2      The ranking of entries from a Member Association can be amended
            by the seeding. If this is done a new ranking order is implicitly established
            and should be used for the purposes of Regulation 10.10.
      10.10.3      Wherever possible entries from any one Member Association shall
            not meet in the first round.

Note: This method of player separation, where it is desired, is recommended for all
      tournaments conducted at any level of competition.

10.11 For the purposes of Regulation 10.10, a qualifying entry or a pair from two different
       Member Associations shall be regarded as not coming from any particular Member
       Association.
       (Only the first and second ranked players / pairs from a given Association may be
       artificially separated into opposite halves, but if there are more than two entries
       from one Association, no players/pairs from that Association should meet in the first
       round. Players/pairs with byes can therefore meet opponents from any Association
       in their first match).
It should be noted that seeding is not compulsory and that when it is done it is not
       compulsory to seed the full number of positions permitted for a draw of that size.




                           New Zealand Badminton Court Officials Manual       Section F3
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                REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW


(Regulation 11 concerns qualifying rounds)

12.    ALTERATIONS TO THE DRAW AND SUBSTITUTIONS

12.1   The Referee shall only permit an alteration to the draw if either Regulation 12.1.1 is
       met or both Regulations 12.1.2 and 12.1.3 are met:

       12.1.1    an error has been made in implementing Regulation 10, and play in that
                 draw has not begun.
       OR
       12.1.2    prior to his/her first scheduled match, a player is prevented from
                 competing through illness, injury or other unavoidable hindrance.
       AND
       12.1.3    the substitute player/pair would have been either unseeded, or seeded no
                 higher than the original player/pair.

12.2   Subject to Regulations 12.1.1, substitution in singles is only permitted when the
       new player is from the same Member Association, and provided the original player
       does not then participate in any event in the tournament

12.3   Subject to Regulation 12.1, substitution in doubles is only permitted:

       12.3.1    to enable the remaining player to have a substitute partner from any
                 Member Association, provided the constitution of no other pair is affected;
                 or

       12.3.2    to replace a pair from one Member Association by a new pair from the
                 same Member Association; or

       12.3.3    to enable the remaining players from two original pairs affected by
                 Regulation 12.1 to partner each other.

                 In this event, if one of the original pairs has drawn a bye, that place in the
                 draw shall be filled by the new pair; otherwise the place shall be drawn by
                 lot.

12.4   Substitutions under Regulations 12.1 to 12.3 take priority over changes under
       Regulations 11.4 and 11.5. (These concern players from qualifying rounds).

12.5   A player/pair who lose(s) a match shall not play again in the same event in the
       same tournament.

12.6   In events played under a Pool system or in Groups, the Referee may allow the
       substitution of a player/pair if the original player/pair is prevented from competing
       through illness, injury or other unavoidable hindrance. Such substitution can only
       take place until the first match of that player/pair has started, but, once started, no
       substitution can take place.




                           New Zealand Badminton Court Officials Manual           Section F3
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              REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW



13      RANKING IN EVENTS PLAYED UNDER THE POOL SYSTEM OR IN GROUPS

 13.1         Ranking will be established by the number of matches won.

 13.2         If two players/pairs have won the same number of matches the winner of the
              match between them will be ranked higher.

 13.3         If three or more players/pairs have won the same number of matches,
              ranking shall be established by the difference between total games won and
              total games lost.

              13.3.1    If this still leaves two players/pairs equal, the winner of the match
                        between them will be ranked higher.

 13.4         If three or more players/pairs have won the same number of matches and
              are equal in the difference between total games won and total games lost,
              ranking shall be established by the difference between total points won and
              total points lost.

              13.4.1    If this still leaves two players/pairs equal, the winner of the match
                        between them will be ranked higher.

              13.4.2    If three or more players/pairs are still equal, then ranking shall be
                        established by drawing lots.

 13.5         A player/pair are entitled to prizes according to results actually obtained
              before any withdrawal due to injury.

 13.6         If illness, injury or other unavoidable hindrance prevents a player/pair
              completing all the pool matches, all the results of that player/pair shall be
              entirely deleted.




                           New Zealand Badminton Court Officials Manual         Section F3
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               REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW


        Round of 32                  Round of 16              DIAGRAM 2
          1 seed                                                          Placing Byes
                                        1 seed                            Where to place byes:
           bye 1                                                          in case of 1 bye use 1
                                                                          2 byes use 1, 2....
                                                                          7 byes use 1 to 7....
                                        bye 1                             16 byes use 1 to 16
           bye 9                                                          ….. etc

          5/8 seed

           bye 5


                                        bye 5
          bye 13

          3/4 seed
                                       3/4 seed
           bye 3


                                        bye 3
          bye 11

          5/8 seed

           bye 7


                                        bye 7
          bye 15




           bye 8

          5/8 seed

          bye 12
                                        bye 4


           bye 4
                                       3/4 seed
          3/4 seed

          bye 14
                                        bye 6


           bye 6

          5/8 seed

          bye 10
                                        bye 2


           bye 2
                                        2 seed
          2 seed




                           New Zealand Badminton Court Officials Manual           Section F3
MS WORD courtesy of Microsoft            January 2003                                Page 5
                REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW


BYES

Where the number of players/pairs entered in the event is not an even power of 2 (ie.
4,8,16,32,64 etc.) byes are necessary. The system of placing byes shown in Diagram 2,
is that approved by the IBF. It allocates byes successively to the seeded players and then
successively into halves, quarters and eighths of the draw. The principle followed is that if
there are any byes, they should be allocated to the top players who are the ones most
likely to have a greater number of matches as they proceed through the tournament. The
system is a complex one and Diagram 2 must be followed closely.

For small local tournaments a much simpler allocation of byes may be made in the
following manner:- (see Diagram 3)

        When the number of playing units is not a power of 2, there shall be byes in the first
        round. The number of byes shall be equal to the difference between the next
        highest power of 2 and the number of playing units. The byes, if even in number,
        shall be divided, as the names are drawn in equal proportions at the top and the
        bottom of the list, above and below the pairs. If uneven in number, there shall be
        one more bye at the top than at the bottom.

        Example 1 With 19 playing units there will be 32 - 19 = 13 byes, 7 at the top and 6
        at the bottom of the list, and 3 matches in the first round, 8 in the second, 4 in the
        third, etc.

        Example 2. With 9 playing units there will be 16 - 9 = 7 byes. 4 at the top and 3 at
        the bottom and one match in the first round thus:-

                                                                          DIAGRAM 3
            Bye           A
                                           B
            Bye           B
                                                               B
            Bye           C
                                           D
            Bye           D
                                                                                 B
 ----- E --------------   E
 ----- F --------------                    G
            Bye           G
                                                               G
            Bye           H
                                           I
            Bye           I




                           New Zealand Badminton Court Officials Manual           Section F3
MS WORD courtesy of Microsoft            January 2003                                Page 6
              REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW



With 5 playing units there will be 2 byes at the top and 1 bye at the bottom.
With 6, 1 bye at the top, and 1 bye at the bottom.
With 7, 1 bye at the top.
With 8, no byes.
With 9, 4 byes at the top, and 3 byes at the bottom.
With 10, 3 byes at the top, and 3 byes at the bottom.
With 11, 3 byes at the top, and 2 byes at the bottom.
With 12, 2 byes at the top, and 2 byes at the bottom.
With 13, 2 bye at the top, and 1 bye at the bottom.
With 14, 1 bye at the top, and 1 bye at the bottom.
With 15, 1 bye at the top.
With 16, no byes.

And so on with larger numbers in like manner.




                           New Zealand Badminton Court Officials Manual         Section F3
MS WORD courtesy of Microsoft            January 2003                              Page 7
t the top, and 1 bye at the bottom.
With 15, 1 bye at the top.
With 16, no byes.

And so on with larger numbers in like manner.




                            New Zealand Badminton Court Officials Manual        Section F3
MS WORD courtesy of Microsoft             January 2003                             Page 8
           REFEREEING: PRE-TOURNAMENT DETAILS - THE DRAW




                            New Zealand Badminton Court Officials Manual   Section F3
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