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 2007
Date August 4-5, 2007 Place Lancaster
Number of players25 Number of rounds3 Number of boards5
Coeff 19.14 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Nick PALMER98.00
2Robert VOLLMAN94.00
3Romain JACQUES90.00
5Thomas PASKO82.00
6David SIDELINGER78.00
7Paul KONRA74.00
7Dan MATHIAS74.00
9Dan STROCK66.00
10Brandon BERNARD62.00
12Jerry FAHRENTOLD54.00
13Amelia ENGELMANN50.00
14Henry RUSSELL46.00
15Joe COLLINSON42.00
15Larry YORK42.00
17Brian MOUNTFORD34.00
18Olin HENTZ30.00
19Chris BEIL26.00
19Don DEL GRANDE26.00
19Rob LARKINS26.00
19Randall MACINNIS26.00
19Dennis MISHLER26.00
19Dan MURRAY26.00
19John SCHOOSE26.00

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