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.

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Rank FirstName LastName Nat. Loc. Score
1Gwen MAGGI87.49
2Dan LESTER86.84
3Doug MOORE86.39
4Cyrille SEVIN84.08
5Andrew GOFF82.24
6Peter YEARGIN82.23
7Tom KOBRIN81.97
8Peter MCNAMARA80.32
9Adam SILVERMAN79.99
10Edi BIRSAN79.43
11Nicolas SAHUGUET78.37
12Andy BARTALONE78.16
13Grant STEEL77.60
14Robert ZAHN77.27
15Chris BRAND76.38
17Steve COOLEY75.76
18Thomas HAVER75.06
20Tad RINGO74.69
21Phil WEISSERT74.18
22Chris MARTIN74.16
23Jim O'KELLEY72.46
24Emmanuel DU PONTAVICE72.00
25Chetan RADIA71.53
26Alex LEBEDEV71.45
27Simon BOUTON71.31
28Toby HARRIS71.04
29Adam SIGAL70.87
30Robert RICH70.70
31Eric GRINNELL70.18
32Brad BLITSTEIN70.10
33David MALETSKY69.41
34David MILLER69.33
35Joe WHEELER68.89
36Randy LAWRENCE-HURT68.67
37John GRAMILA67.88
38René VAN ROOIJEN67.47
39Mark WIGHTMAN67.28
40Nicholas DELATEUR67.26
41Conrad WOODRING66.90
42Dan MCNEILL66.51
43Brian DENNEHY66.12
44Jeff LADD65.98
45David HOOD65.65
46Michael BINDER65.62
47Jake MANNIX65.60
48Matt SHIELDS65.56
49Dave SIMPSON65.51
50Luca PAZZAGLIA64.55

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