World Diplomacy Database

The World Diplomacy Database


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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.

World Boardgaming Championships 2002
Date August 2-4, 2002 Place Baltimore
Number of players50 Number of rounds3 Number of boards16
Coeff 115.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Andy MARSHALL99.00
2Melissa CALL (nee NICHOLSON)97.00
3Michael CZAJKOWSKI95.00
4David HOOD93.00
5Mike HALL91.00
6Doug FAUST89.00
6Ric MANNS89.00
8Brian ECTON85.00
9Hudson DEFOE83.00
9Ray SETZER83.00
11Graham WOODRING79.00
12Joe WHEELER77.00
14Andy BARTALONE73.00
15Evan MAIER71.00
16Chris MARTIN69.00
17Brian SHELDEN67.00
17Al UGAZ67.00
17Tony VILA67.00
20Rick DESPER61.00
20Ike PORTER61.00
22Dan MATHIAS57.00
23Joe COLLINSON55.00
24Paul KONKA53.00
25Frank ARNDT51.00
25Steve EMMERT51.00
25Charles STUCKER51.00
28Patrice PAYTON45.00
29Web AGNEW43.00
30Luis UGAZ41.00
31Joe PABIS39.00
32Jeff LADD37.00
32Jason MITCHELL37.00
32Marlin PIERCE37.00
32Mike SIMS37.00
36Rich O'BRIEN29.00
37Carl WILLNER27.00
38Randy JACKSON25.00
38Jim MCCARTHY25.00
38Ken SAMUEL25.00
38Carl WALLING25.00
38Conrad WOODRING25.00
43Steve BROOKS15.00
43Charles ELLSWORTH15.00
43Scott FENN15.00
43Derek HARMON15.00
43Ian LANGE15.00
43Teddy LANGE15.00
43Ken MATHIAS15.00
43Kevin YOUELLS15.00

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