World Diplomacy Database

The World Diplomacy Database


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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.

International ranking (National ranking)247 (135) Score47.22

DateCountryName of the tournamentRankCoeff1Score
2018-09-02Weasel Moot XII 201812/2810.0058.93
2017-06-25Weasel Moot XI 201729/3612.2920.83
2017-04-09CODCon Open 201711/218.0050.00
2016-06-26World DipCon XXVI 201645/9320.0052.15
2014-07-27Weasel Moot VIII 20148/269.4371.15
2014-04-06CODCon Open 20143/228.2988.64
2013-06-23Weasel Moot VII 201325/3512.0030.00
2012-08-12World DipCon XXII 201243/8020.0046.88
2011-04-17CODCon Open 201121/248.8614.58
2010-09-26Weasel Moot IV 201022/3712.5741.89
2010-04-11CODCon Open 20106/248.8677.08
2009-04-19CODCon Open 200911/228.2952.27
2008-11-15Weasel Moot II 200811/3512.0070.00
2008-08-17GenCon Indianapolis 20085/5515.0091.82
2008-04-13CODCon Open 20089/197.4255.26
2007-10-07Tempest in a teapot IX 200716/4113.7162.20
2007-08-19HuskyCon 200718/3512.0050.00
2007-08-12World DipCon XVII 200728/7020.0060.71
2007-06-10Weasel Moot I 200729/3812.8625.00
2007-04-15CODCon Open 200718/3010.5741.67

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