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)92 (51) Score57.05

DateCountryName of the tournamentRankCoeff1Score
2017-04-02BADAss Whipping 201720/3612.2945.83
2017-01-29Cascadia Open 20174/218.0083.33
2016-06-26World DipCon XXVI 201655/9320.0041.40
2015-01-01NADF Masters 20158/248.8668.75
2014-05-25World DipCon XXIV 201438/8720.0056.90
2014-01-26DipCon 47 201426/6515.0060.77
2013-02-03WAC 10 20134/2810.0087.50
2012-01-29WAC 9 201221/4514.8654.44
2011-09-11Weasel Moot V 201115/3913.1462.82
2011-01-22WAC 8 201110/2910.2967.24
2011-01-16NADF Masters 20119/197.4355.26
2010-04-18DipCon 43 20101/4715.0098.94
2010-01-30Mini WAC 201010/187.1447.22
2009-01-25WAC 6 20095/4514.8690.00
2008-08-03DragonFlight 20089/115.1422.73
2008-04-20BADAss Whipping 20083/228.2988.64
2008-01-27WAC 5 200821/3010.5731.67
2007-08-12World DipCon XVII 200716/7020.0077.86
2007-08-05DragonFlight 20074/146.0075.00
2007-01-20WAC 4 20072/3411.7195.59
2006-10-15BADAss Whipping 20063/3411.7192.65
2006-10-01Canuck Con 20064/197.4381.58
2006-05-07Cascade Summit 20066/166.5765.63
2006-01-28WAC 3 20062/3612.2995.83
2005-10-30BADAss Whipping 20053/248.8689.58
2005-10-09DragonFlight 20054/187.1480.56
2005-07-31World DipCon XV 200510/8320.0088.55
2005-06-26Dip in the Ocean 20056/238.5776.09
2005-04-22Cascade Summit 20054/228.2984.09
2005-01-21WAC 2 20052/3712.5795.95
2004-10-10DragonFlight 20046/3812.8685.53
2004-08-27Dip in the Ocean 20046/248.8677.08
2004-08-15Tempest in a teapot VI 20044/5615.0093.75
2004-05-30Dixie 18 20046/4214.0086.90
2003-11-01WAC 1 200326/3110.8617.74
2003-08-08HuskyCon 200311/3010.5765.00
2003-05-23Dixie 17 200319/5215.0064.42
2003-02-16World DipCon XIII 200371/12820.0044.92
2003-01-18Dress Rehearsal Con - West 20034/156.2976.67
2002-09-28Clam Dip 200214/176.8620.59
2002-08-25DragonFlight 200212/3411.7166.18
2002-04-26PiggyBack 200221/3612.0043.06

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