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.

World DipCon XXVII 2017
Date July 7-9, 2017 Place Oxford
Number of players84 Number of rounds5 Number of boards45
Coeff 120.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Doug MOORE99.40
2Marvin FRIED98.21
3Tanya GILL97.02
4Nicolas SAHUGUET95.83
5Chetan RADIA94.64
6Phil WEISSERT93.45
7Grégory MOSTYN92.26
8Mark WIGHTMAN91.07
9Alex LEBEDEV89.88
10Peter MCNAMARA88.69
11Peter YEARGIN87.50
13Conrad WOODRING85.12
14Steve COOLEY83.93
15Chris MARTIN82.74
16Chris BRAND81.55
17Nathan BARNES80.36
18Laurent JOLY79.17
19Thomas HAVER77.98
21Tim JONES75.60
22Emmanuel DU PONTAVICE74.40
23Dave SIMPSON73.21
24Julian JOOST72.02
25David MALETSKY70.83
26Simon BOUTON69.64
27Ivan WOODWARD68.45
28Dave WREATHALL67.26
29Shane CUBIS66.07
30Owen RICHARDS64.88
31Andrew GOFF63.69
39Sven VASSEUR54.17
41René VAN ROOIJEN51.79
52Günther BEDSON38.69

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