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 V 2011
Date September 9-11, 2011 Place Chicago
Number of players39 Number of rounds3 Number of boards14
Coeff 113.14 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Chris MARTIN98.72
2John GRAMILA96.15
3Peter YEARGIN93.59
4Christian MACDONALD91.03
5Adam SILVERMAN88.46
6Robert ROUSSE85.90
7Don WILLIAMS83.33
8Matt SUNDSTROM80.77
9Edi BIRSAN78.21
10Nathan COCKERILL75.64
11Christian PEDONE73.08
12Graham WOODRING70.51
13Matt SHIELDS67.95
14Conrad WOODRING65.38
15Eric MEAD62.82
16Jason O'DONNELL60.26
17Brian SHELDEN57.69
18Don GLASS55.13
19Roland COOKE52.56
20Greg DUENOW50.00
21Alex MASLOW47.44
22Nick ROHN44.87
23Kevin O'KELLY42.31
24Christian KLINE39.74
25Alex AMANN37.18
26Chris GLASSBURN34.62
27Jim O'KELLEY32.05
28David MALETSKY29.49
29Donald WOODRING26.92
30Ben DIPAOLA24.36
31Melinda HOLLEY21.79
32Nathan BARNES19.23
33Samuel BASSETT16.67
33Nathan KOS16.67
33Peter LOKKEN16.67
33Mike MORRISON16.67
33Tony PROKES16.67

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