World Diplomacy Database

The World Diplomacy Database


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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.

Weasel Moot II 2008
Date November 14-15, 2008 Place Chicago
Number of players35 Number of rounds3 Number of boards11
Coeff 112.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Nick ROHN98.57
2Matt SUNDSTROM95.71
3Thomas HAVER92.86
4Christian KLINE90.00
5Rob CHASE87.14
6Edi BIRSAN84.29
7Graham WOODRING81.43
8Michael MARTINEZ78.57
9Eric BROWN75.71
10Jim O'KELLEY72.86
11Grant SMITH70.00
12Chris DAVIS67.14
13Guillaume MARLIOT64.29
14Andy BARTALONE61.43
15Don VANA58.57
16Chris GLASSBURN55.71
17Chuck RICHTFORT52.86
18Christian MACDONALD50.00
19Barry JOHNSON47.14
20Ray SETZER44.29
21Paul PIGNOTTI41.43
21Jerry PROCHAZKA41.43
23Steve PEDLOW35.71
24Dan BURGESS32.86
25Gary PRZYBOCKI30.00
26Pete MCNAMARA27.14
27Greg DUENOW24.29
29Thom COMSTOCK18.57
29Tom ROHN18.57
31David MALETSKY12.86
31Adam PLOSHAY12.86
33Christopher M. DAVIS7.14
33Robert ROSSI7.14
35Kevin O'KELLY1.43

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