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)275 (154) Score46.33

DateCountryName of the tournamentRankCoeff1Score
2016-10-09Tempest in a Teapot XVIII 201636/4214.0015.48
2015-10-11Tempest in a Teapot XVII 201521/3913.1447.44
2015-05-24Dixie 29 20155/259.1482.00
2014-05-25World DipCon XXIV 201436/8720.0059.20
2014-01-26DipCon 47 201441/6515.0037.69
2013-05-26Dixie 27 20136/238.5776.09
2008-04-13SpringCon 200814/187.1425.00
2007-10-07Tempest in a teapot IX 200718/4113.7157.32
2007-08-12World DipCon XVII 200727/7020.0062.14
2007-05-27Dixie 21 200718/3010.5741.67
2006-10-08Tempest in a teapot VIII 20062/248.8693.75
2005-07-31World DipCon XV 200553/8320.0036.75
2004-08-15Tempest in a teapot VI 200414/5615.0075.89
2004-02-29PrezCon 200419/3010.5738.33
2003-05-23Dixie 17 20033/5215.0095.19
2003-02-16World DipCon XIII 200390/12820.0030.08
2003-01-19Dress Rehearsal Con - East 200314/218.0035.71
2002-10-13Tempest in a teapot IV 200214/4514.8670.00
2002-08-04World Boardgaming Championships 200220/5015.0061.00
2002-04-26PiggyBack 200212/3612.0068.06
2002-02-24PrezCon 20021/279.7198.15
2000-08-06World DipCon X 200042/14120.0070.57
1998-07-06World DipCon VIII 199826/7720.0066.88

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