World Diplomacy Database

The World Diplomacy Database


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WDD Battle Ranking System Scoring System Event's report Statistics

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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.

BADAss Whipping 2017
Date April 1-2, 2017 Place San Jose
Number of players36 Number of rounds3 Number of boards14
Coeff 112.29 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Timothy JAXON98.61
2Doug MOORE95.83
3Andrew GOFF93.06
4Edi BIRSAN90.28
5David MILLER87.50
6Chris BRAND84.72
7Peter YEARGIN81.94
8Matt SHIELDS79.17
9Brian SHELDEN76.39
10Randy LAWRENCE-HURT73.61
11Craig MAYR70.83
12Adam SILVERMAN68.06
13Greg HILDEBRAND65.28
14Chris MARTIN62.50
15Nicholas DELATEUR59.72
16Alex AMANN56.94
17Kyra OLSON54.17
18Tom HILTON51.39
19Jordan ABRONSON48.61
20Eric MEAD45.83
21Nathan BARNES43.06
22Carl NELSON40.28
23Bryan PRAVEL37.50
24Jim SAID34.72
25Jason MASTBAUM31.94
26Alex MASLOW29.17
27Richard BARGE26.39
28Eric RHINE23.61
29Louis ABRONSON20.83
30Andy HULL18.06
31Zac JARVIE15.28
32Aash ANAND12.50
33Santosh AMAN9.72
33Terry DRINKWATER9.72
33Michael LOTFY9.72
33Alan PRAVEL9.72

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