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 Update2017-08-06
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.

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Rank FirstName LastName Nat. Loc. Score
1Nicolas SAHUGUET85.29
2Dan LESTER85.29
3Gwen MAGGI85.08
4Doug MOORE84.55
5Thomas HAVER83.43
6Cyrille SEVIN82.63
7Peter YEARGIN82.11
8Adam SILVERMAN81.94
9Tom KOBRIN81.82
10Peter MCNAMARA79.48
11Edi BIRSAN78.93
12Robert ZAHN77.65
13Tad RINGO76.64
14Alex LEBEDEV76.56
15Phil WEISSERT76.14
16Toby HARRIS75.76
17Andy BARTALONE75.27
18Chris MARTIN74.75
19David MALETSKY74.29
20Chetan RADIA74.27
21Simon BOUTON74.04
22Grant STEEL73.59
23Emmanuel DU PONTAVICE73.24
24Steve COOLEY73.15
25Robert RICH72.96
26Andrew GOFF71.99
27Chris BRAND71.43
28Steve LYTTON71.31
29Fabien LOREAU71.17
30Conrad WOODRING71.02
31Brian DENNEHY70.86
32Graham WOODRING70.40
33Eric GRINNELL70.17
34Christian MACDONALD69.94
35Fabian STRAUB69.94
38John GRAMILA69.44
39Mark WIGHTMAN69.39
40Jim O'KELLEY69.16
41Dave SIMPSON67.73
42Thorin MUNRO67.44
43Randy LAWRENCE-HURT66.24
44Brian SHELDEN66.15
45Le´ S──RLAINEN66.14
46Jason O'DONNELL66.03
48Joe WHEELER64.91
49Frank OSCHMIANSKY64.46
50Jeff LADD64.39

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