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.

Regatta III 2002
Date February 15-17, 2002 Place Denver
Number of players45 Number of rounds4 Number of boards18
Coeff 114.86 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Edward HAWTHORNE98.89
2Eric JURGELEIT96.67
3Nathan BARNES94.44
4Matt SHIELDS92.22
5Jon SAUL90.00
6Matt DREW87.78
7Edi BIRSAN85.56
8Monty CARLISLE83.33
9Yarden LIVNAT81.11
10David WILLIS78.89
11David MALETSKY76.67
12Sean COLMAN74.44
13David DYE72.22
14Jim VERQUIST70.00
15Brian SHELDEN67.78
16Buz EDDY65.56
17John SWIONTEK63.33
18Steve MAURICH61.11
19Kevin KACMARYNSKI58.89
20Manus HAND56.67
21Jennifer CABBAGE54.44
22Neil RILEY52.22
23Andrew NEUMANN50.00
24Josh BEAUDETTE47.78
25James MORGAN45.56
26Bear BARROW43.33
27Kevin MILNES41.11
28Rachael ACKS38.89
28Anna SCHAER38.89
30Cyndy MORGAN34.44
30Michael PAUL34.44
30Daniel RILEY34.44
30Jeff SCHARF34.44
34Chris KULANDER25.56
35James HARMAN23.33
36Jim CROSS21.11
37Robert MARSHALL18.89
38Mitri HAJJ16.67
39Nick CUROTT14.44
40Art LEE12.22
41Dan RAE10.00
42Troy BETTINGER7.78
43Mike OSBORNE5.56
43Marco SARACONE5.56
45Rho HOLDEN1.11

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