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.

Brian LEE
International ranking (National ranking)2398 (1225) Score36.70

DateCountryName of the tournamentRankCoeff1Score
2018-05-27Dixie 32 201818/4113.7157.32
2016-10-09Tempest in a Teapot XVIII 201635/4214.0017.86
2016-05-29Dixie 30 201623/3612.2937.50
2015-10-11Tempest in a Teapot XVII 201536/3913.148.97
2014-10-12Tempest in a Teapot XVI 201415/2810.0048.21
2013-10-13DipCon 46 201328/3311.4316.67
2013-05-26Dixie 27 20138/238.5767.39
2013-01-20NADF Masters 201318/228.2920.45
2012-10-07Tempest in a teapot XIV 201211/166.5734.38
2012-05-27Dixie 26 201218/238.5723.91
2011-10-02Tempest in a teapot XIII 201125/259.142.00
2011-05-29Dixie 25 20114/368.0090.28
2010-10-17Tempest in a teapot XII 20105/3010.5785.00
2009-05-24Dixie 23 200913/228.2943.18
2008-05-25Dixie 22 200822/2810.0023.21
2008-02-24PrezCon 200810/218.0054.76
2007-10-07Tempest in a teapot IX 200717/4113.7159.76
2007-05-27Dixie 21 20074/3010.5788.33
2006-10-08Tempest in a teapot VIII 20066/248.8677.08
2006-08-20HuskyCon 200622/2910.2925.86
2005-07-31World DipCon XV 200556/8320.0033.13
2005-05-27Dixie 19 200523/3211.1429.69
2005-02-23PrezCon 200514/176.8620.59
2004-08-15Tempest in a teapot VI 200421/5615.0063.39
2004-05-30Dixie 18 200418/4214.0058.33
2002-02-24PrezCon 200220/279.7127.78

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