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.

PiggyBack 2002
Date April 26, 2002 Place Portland
Number of players36 Number of rounds4 Number of boards17
Coeff 112.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Manus HAND98.61
2Andy MARSHALL95.83
3Ken LEMERE93.06
4Nathan BARNES90.28
5Jerry FEST87.50
7Edi BIRSAN81.94
8Jeff DWORNICKI79.17
9Ben FERGUSON76.39
10Edward HAWTHORNE73.61
11Kevin KACMARYNSKI70.83
12Ike PORTER68.06
13Trindon WILKERSON65.28
14Bruce KNIGHT62.50
15Jake MANNIX59.72
16Brad ROSMAN56.94
16Charles SEATON56.94
18Spencer BERNARD51.39
19Rich ATWATER48.61
20Tim ANSTINE45.83
21Eric MEAD43.06
22Dennis MURRAY40.28
23Buz EDDY37.50
24Andy LAKEY34.72
25Kate ADAMS31.94
26Jennifer CABBAGE29.17
27Kevin HOYT26.39
28Kathy MILLER23.61
28Mike NOBLE23.61
30Matt SHIELDS18.06
31Chris CRAMER15.28
32Andy BARTALONE12.50
33Wes WAGNER9.72
34Douglas MARCKS6.94
35Matt GOSHER4.17
35Eric YARNELL4.17

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