World Diplomacy Database

The World Diplomacy Database


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WDD Battle Ranking System Scoring System Event's report Statistics

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

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.

World Boardgaming Championships 2006
Date August 2-5, 2006 Place Lancaster
Number of players26 Number of rounds3 Number of boards5
Coeff 19.43 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Nicholas BENEDICT98.08
2Dennis MISHLER94.23
3Scott BOWLING90.38
4Olin HENTZ86.54
5Robert VOLLMAN82.69
6Dan MATHIAS78.85
7Carl WALLING75.00
8David SIDELINGER71.15
9Justin NORDSTROM67.31
10Paul KONKA63.46
11Charles STUCKER59.62
12Amelia ENGELMANN55.77
13John BARRINGER51.92
14Brian LEONARD48.08
15Angela FARRINGTON44.23
16Nate JOHNSTON40.38
17Wally HNATIW36.54
18Alan FARRINGTON32.69
19Bill BESWICK28.85
19John BOYD28.85
19Don DEL GRANDE28.85
19Michael FARRINGTON28.85
19Ric MANNS28.85
19Thomas PASKO28.85
19Justin THOMPSON28.85
19Christopher YAUSE28.85

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