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 I 2007
Date June 9-10, 2007 Place Chicago
Number of players38 Number of rounds3 Number of boards13
Coeff 112.86 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Chris MARTIN98.68
2Edi BIRSAN96.05
3Matt SUNDSTROM93.42
4Don WILLIAMS90.79
5Andy BARTALONE88.16
6Doug MOORE85.53
7Nick ROHN82.89
8Chris GLASSBURN80.26
9Christian KLINE77.63
10David MALETSKY75.00
11Jeremiah PETERSON72.37
12Kevin O'KELLY69.74
13Colden ROULEAU67.11
14Andrew BARTLEIN64.47
15Clint LINSCOTT61.84
16Jim COLLINS59.21
17Bert SCHOOSE56.58
18France-May MARTEL53.95
19Thom COMSTOCK51.32
20Greg DUENOW48.68
21Bill SMALL46.05
22Paul PIGNOTTI43.42
23Tyler DUENOW40.79
24Rob EYERS38.16
25Paul HAGY35.53
26Mike SULLIVAN32.89
27Dan BURGESS30.26
28Erica ALEMDAR27.63
29Mike BARTLEIN25.00
29Grant SMITH25.00
31Benjamin VAZQUEZ19.74
31Blake WARD19.74
33Robert HADEN14.47
34Jason RAYNOVICH11.84
34Rob SHIMKO11.84
36Owen MOORE6.58
36Scott YAHNE6.58
38Robert ROSSI1.32

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