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.

PrezCon 2002
Date February 20-24, 2002 Place Charlottesville
Number of players27 Number of rounds3 Number of boards8
Coeff 19.71 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Ike PORTER98.15
2Joe WHEELER94.44
3Andy MARSHALL90.74
4David HOOD87.04
5Chris MARTIN83.33
6Steve KOEHLER79.63
7Jeff LADD75.93
8Jason MCCONNEY72.22
9Andy BARTALONE68.52
10Brian SHELDEN64.81
11Sean CABLE61.11
11Tom CARLSON61.11
13Thomas PASKO53.70
14Nicholas BENEDICT50.00
15Dan MATHIAS46.30
16Rick DESPER42.59
17Steve EMMERT38.89
19Conrad WOODRING31.48
20Brian LEE27.78
21Eddie ROTHENHEBER24.07
22Brian ECTON20.37
22Bill THOMPSON20.37
24Web AGNEW12.96
25Scott FENN9.26
26Johnny HASAY5.56
27Mike CANNON1.85

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