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.

International ranking (National ranking)3 (1) Score86.39

DateCountryName of the tournamentRankCoeff1Score
2019-09-08DipCon 201910/4715.0079.79
2018-10-07World DipCon XXVIII 20182/9420.0098.40
2018-05-27Dixie 32 20183/4113.7193.90
2018-01-28Cascadia Open 20187/197.4365.79
2017-07-09World DipCon XXVII 20171/8420.0099.40
2017-04-02BADAss Whipping 20172/3612.2995.83
2017-01-29Cascadia Open 20178/218.0064.29
2016-08-07United States Diplomacy Championship 201610/6019.1484.17
2016-06-26World DipCon XXVI 20162/9320.0098.39
2015-10-11Tempest in a Teapot XVII 20158/3913.1480.77
2014-05-25World DipCon XXIV 201435/8720.0060.34
2014-01-26DipCon 47 20146/6515.0091.54
2013-02-03WAC 10 20135/2810.0083.93
2012-08-12World DipCon XXII 201211/8020.0086.88
2012-05-27Dixie 26 20125/238.5780.43
2012-01-29WAC 9 20128/4514.8683.33
2011-10-02Tempest in a teapot XIII 201111/259.1458.00
2011-05-29Dixie 25 20111/368.0098.61
2011-01-16NADF Masters 20112/197.4392.11
2010-05-30Dixie 24 20103/3010.5791.67
2009-09-19Weasel Moot III 20092/3812.8696.05
2008-05-25Dixie 22 20085/2810.0083.93
2007-10-07Tempest in a teapot IX 20075/4113.7189.02
2007-08-12World DipCon XVII 20071/7020.0099.29
2007-06-10Weasel Moot I 20076/3812.8685.53
2007-05-27Dixie 21 20071/3010.5798.33
2006-05-28Dixie 20 20063/3010.5791.67
2006-01-28WAC 3 20067/3612.2981.94
2005-07-31World DipCon XV 20059/8320.0089.76
2005-05-27Dixie 19 20052/3211.1495.31
2005-02-23PrezCon 20053/176.8685.29
2004-08-15Tempest in a teapot VI 200422/5615.0061.61
2004-06-20Massacre 20046/3110.8682.26
2004-05-30Dixie 18 20041/4214.0098.81
2004-02-29PrezCon 20042/3010.5795.00
2003-05-23Dixie 17 200312/5215.0077.88

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