World Diplomacy Database
English

The World Diplomacy Database
Contact

Log
In

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
Year
Permanent
20162015201420132012201120102009
20082007200620052004200320022001

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.


Jeff LADD
International ranking (National ranking)44 (25) Score65.98

DateCountryName of the tournamentRankCoeff1Score
2019-05-26Dixie 33 20195/3612.2987.50
2018-05-27Dixie 32 201812/4113.7171.95
2017-05-28Dixie 31 201714/2810.0051.79
2016-10-09Tempest in a Teapot XVIII 20161/4214.0098.81
2016-05-29Dixie 30 201610/3612.2973.61
2015-10-11Tempest in a Teapot XVII 20155/3913.1488.46
2014-10-12Tempest in a Teapot XVI 201412/2810.0058.93
2014-05-25World DipCon XXIV 201446/8720.0047.70
2013-10-13DipCon 46 201326/3311.4322.73
2013-05-26Dixie 27 20138/238.5767.39
2012-10-07Tempest in a teapot XIV 20125/166.5771.88
2012-05-27Dixie 26 20125/238.5780.43
2011-10-02Tempest in a teapot XIII 201115/259.1442.00
2010-10-17Tempest in a teapot XII 201011/3010.5765.00
2010-05-30Dixie 24 201011/3010.5765.00
2009-05-24Dixie 23 20094/228.2984.09
2008-02-24PrezCon 20083/218.0088.10
2007-10-07Tempest in a teapot IX 200726/4113.7137.80
2007-05-27Dixie 21 20076/3010.5781.67
2006-05-28Dixie 20 20067/3010.5778.33
2005-07-31World DipCon XV 200546/8320.0045.18
2005-05-27Dixie 19 200514/3211.1457.81
2005-02-23PrezCon 20059/176.8650.00
2004-08-22HuskyCon 200411/3913.1473.08
2004-08-15Tempest in a teapot VI 200426/5615.0054.46
2004-05-30Dixie 18 20046/4214.0086.90
2004-02-29PrezCon 20049/3010.5771.67
2003-07-28World Boardgaming Championships 20039/2910.2970.69
2003-05-23Dixie 17 200313/5215.0075.96
2003-01-19Dress Rehearsal Con - East 200313/218.0040.48
2002-10-13Tempest in a teapot IV 200221/4514.8654.44
2002-08-04World Boardgaming Championships 200232/5015.0037.00
2002-02-24PrezCon 20027/279.7175.93

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