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)17 (8) Score75.76

DateCountryName of the tournamentRankCoeff1Score
2019-09-08DipCon 20191/4715.0098.94
2018-10-07World DipCon XXVIII 201819/9420.0080.32
2017-09-17Boston Massacre 201713/279.7153.70
2017-07-09World DipCon XXVII 201714/8420.0083.93
2017-02-26TotalCon 201712/207.7142.50
2016-09-25Boston Massacre 20166/218.0073.81
2016-06-26World DipCon XXVI 201616/9320.0083.33
2015-08-23The Boroughs 201515/218.0030.95
2015-02-08TempleCon 201510/269.4363.46
2014-05-25World DipCon XXIV 201439/8720.0055.75
2014-02-09TempleCon 20147/94.5727.78
2014-01-26DipCon 47 20143/6515.0096.15
2013-10-13DipCon 46 201314/3311.4359.09
2012-08-12World DipCon XXII 20127/8020.0091.88
2012-02-05TempleCon 20124/135.7173.08
2011-11-06DipCon 44 201112/3612.2968.06
2011-01-16NADF Masters 20115/197.4376.32
2010-10-17Tempest in a teapot XII 201014/3010.5755.00
2010-06-27Massacre 20101/228.2997.73
2010-05-30Dixie 24 201010/3010.5768.33
2010-04-18DipCon 43 20104/4715.0092.55
2010-02-07TempleCon 20108/248.8668.75
2009-06-28World DipCon XIX 200914/5320.0074.53
2009-02-08TempleCon 20093/218.0088.10
2008-07-27Maine Diplomacy Circuit 20089/228.2961.36
2007-08-12World DipCon XVII 200717/7020.0076.43
2005-07-31World DipCon XV 200528/8320.0066.87
2003-02-16World DipCon XIII 200341/12820.0068.36
1990-06-24World DipCon II 19903/10320.0097.57

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