World Diplomacy Database

The World Diplomacy Database


Home Tournament League Circuit Player
WDD Battle Ranking System Scoring System Event's report Statistics

Other ranking system

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.

HuskyCon 2006
Date August 18-20, 2006 Place Long Island
Number of players29 Number of rounds3 Number of boards10
Coeff 110.29 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Jonathan HILL98.28
2Gregg HARRY94.83
3Tom KOBRIN91.38
4Adam SIGAL87.93
5Andy BARTALONE84.48
6Jim O'KELLEY81.03
7Melissa CALL (nee NICHOLSON)77.59
8Kai HSIEH74.14
9Alex AMANN70.69
10Seth VAUGHN67.24
11David MALETSKY63.79
12Robert HOLT60.34
13Chris MARTIN56.90
14Donald WOODRING53.45
15Jeremiah PETERSON50.00
16Buz EDDY46.55
17Carl ELLIS43.10
18Andrew KLOCK39.66
19Ben TEIXEIRA36.21
20Mike PERLMUTTER32.76
21Taylor HAYWARD29.31
22Brian LEE25.86
23Keith BLAHA22.41
24Paul CAMINA18.97
24Evan PERLMAN18.97
26Mike BARNO12.07
26Alex BRONER12.07
26Andy SIMON12.07
26Garrett YABLONSKI12.07

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