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 XI 2017
Date June 23-25, 2017 Place Chicago
Number of players36 Number of rounds4 Number of boards13
Coeff 112.29 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Mike FRENCH98.61
2Eric GRINNELL95.83
3John GRAMILA93.06
4Mick JOHNSON90.28
5Matt SUNDSTROM87.50
6Jim O'KELLEY84.72
7Siobhan NOLEN81.94
8Jake TROTTA79.17
9Jorge ZHANG76.39
10Gus SPELMAN73.61
11Brian SHELDEN70.83
12Jeff GOSS68.06
13Nick ROHN65.28
14Chris KELLY62.50
15Ali ADIB59.72
17Gudrun JUFFER54.17
18Melinda HOLLEY51.39
19Chris GLASSBURN48.61
20Paul PIGNOTTI45.83
21Tim YANOK43.06
22Josh HEFFERNAN40.28
23David SPANOS37.50
24Bryan PRAVEL34.72
25Brad HARRINGTON31.94
26Megan MURPHY29.17
27Kevin O'KELLEY26.39
28Gabriel MORALES23.61
29Grant SMITH20.83
30Guy LOFTIN18.06
31Jake LANGENFELD15.28
32Ben HAFNER12.50
32David HAFNER12.50
32Kevin POENISCH12.50
32Geoff SEREDNESKY12.50
32Mike WHITTY12.50

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