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 III 2009
Date September 18-19, 2009 Place Chicago
Number of players38 Number of rounds3 Number of boards14
Coeff 112.86 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Matt SUNDSTROM98.68
2Doug MOORE96.05
3Peter YEARGIN93.42
4Christian KLINE90.79
5Edi BIRSAN88.16
6Pete MCNAMARA85.53
7Melinda HOLLEY82.89
8Eric BROWN80.26
10Jim O'KELLEY75.00
11Don WILLIAMS72.37
12Christian MACDONALD69.74
13Mike HALPIN67.11
14Conrad WOODRING64.47
15Jonathan HILL61.84
16Alex AMANN59.21
17Kevin O'KELLY56.58
18Don GLASS53.95
19Mike MORRISON51.32
20Rick DESPER48.68
21Vince LUTTERBIE46.05
22Greg DUENOW43.42
23Chris GLASSBURN40.79
24Paul HAGY38.16
25Marty HARRIS35.53
26Scott CHEEVER32.89
27May Ling CHONG30.26
28Gary BEHNEN27.63
29Andy LISCHETT25.00
30Samuel BASSETT22.37
31Chris CONNOR19.74
32Nick ROHN17.11
33Christopher M. DAVIS14.47
35Tom ROHN9.21
36Paul PIGNOTTI6.58
37Michael MARTINEZ3.95
38John DUCA1.32

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