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WDD Battle Ranking System Scoring System Event's report Statistics

Other ranking system

Dip Pouch Tournament Rating
AuthorMatt Shields Last Update2019-10-09
International ranking National ranking
List of included tournaments List of included circuits
Year
Permanent
20162015201420132012201120102009
20082007200620052004200320022001

Each player begins with an initial rating of 40 before their first tournament. After each event, a player's final placement (e.g. 1st, 2nd, 3rd, etc.) is converted to a percentile score.

The formula used is: (([Number of Players in the event]+0.5-[Placement])/[Number of Players in the event])*100

If the event was the World Championship, the tournament value is 20.
Otherwise, if the tournament has only one round, the tournament value is equal to the number of players in the event divided by 7, plus 2. If the event has more than one round, the tournament value is equal to the number of players in the event divided by 3.5, plus two. ( (#players/3.5)+2 ). However, the maximum tournament value for any non-world championship event is 15.

Events before 2001, with the exception of World Championships, have a tournament value of zero, meaning they have no effect on ratings. The theory is that results be based only on the last ten years of competitive play.

As an example of calculating new ratings, suppose a player enters an event with a rating of 55. Suppose also that they finish in 8th place out of 65 players. The player's percentile score is (65 + 0.5 - 8)/65 * 100 = 88.46. A 65 player event would have a tournament value of (65/3.5) +2 = 20.57. However, since the maximum tournament value is 15, that will be the value for this event. Therefore, this player's rating will move 15% of the distance from 55 to 88.46. The difference between 88.46 and 55 is 33.46. 15% of 33.46 is 5.019. Therefore, we add 5.019 points to this player's rating as a results of this event, meaning their rating increases from 55 to 60.019.


Australian Championships 2008
Date January 26-28, 2008 Place Sydney
Number of players21 Number of rounds4 Number of boards12
Coeff 18.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Andrew GOFF97.62
2Craig SEDGWICK92.86
3Greg EVANS88.10
4Bill BROWN83.33
5Sean COLMAN78.57
6Steve LYTTON73.81
7Geoff KERR69.05
8Peter MCNAMARA64.29
9Grant SZUVEGES59.52
10Rob STEPHENSON54.76
11Kimberly COLMAN50.00
12Guy MISCHLEWSKI45.24
13Thorin MUNRO40.48
14Tom DRAKE-BROCKMAN35.71
15Vaughan SMITH30.95
16Anthony ABDO26.19
17Byron SMITH21.43
18Vijayan THOMAS16.67
19Peter JAMESON11.90
20Brett CHATTERTON7.14
21Jarrah LACKO2.38

The North American Diplomacy Association The European Diplomacy Association The Diplomacy Association of Australia and New Zealand