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)83 (47) Score58.03

DateCountryName of the tournamentRankCoeff1Score
2018-02-25TotalCon 20187/269.4375.00
2016-10-09Tempest in a Teapot XVIII 20168/4214.0082.14
2016-06-26World DipCon XXVI 201639/9320.0058.60
2015-11-08Carnage on the mountain 201513/3311.4362.12
2015-08-09DipCon 48 201524/4715.0050.00
2014-05-25World DipCon XXIV 201464/8720.0027.01
2013-05-26Dixie 27 201314/238.5741.30
2012-08-12World DipCon XXII 201224/8020.0070.63
2011-08-22HuskyCon 20117/3913.1483.33
2011-01-22WAC 8 20116/2910.2981.03
2010-05-30Dixie 24 201015/3010.5751.67
2010-01-30Mini WAC 20107/187.1463.89
2009-01-25WAC 6 200933/4514.8627.78
2005-05-27Dixie 19 200520/3211.1439.06
2004-08-22HuskyCon 200430/3913.1424.36
2004-08-15Tempest in a teapot VI 200418/5615.0068.75
2004-05-30Dixie 18 200426/4214.0039.29
2004-02-29PrezCon 200416/3010.5748.33
2003-10-26Carnage on the mountain 20033/115.1477.27
2003-08-08HuskyCon 200314/3010.5755.00
2003-07-28World Boardgaming Championships 200320/2910.2932.76

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