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.

HuskyCon 2011
Date August 20-22, 2011 Place Long Island
Number of players39 Number of rounds3 Number of boards13
Coeff 113.14 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Andy BARTALONE98.72
2Chris MARTIN96.15
3Brian ECTON93.59
3Donald WOODRING93.59
5Chris BARFIELD88.46
6Alex AMANN85.90
7Jay HEUMANN83.33
8Jason MASTBAUM80.77
9David MALETSKY78.21
10Roland COOKE75.64
11Joseph VETTER73.08
12Andrew CASSESE70.51
12Robert ROUSSE70.51
14Michael BINDER65.38
15Graham WOODRING62.82
16David JOHNSON60.26
16Peter YEARGIN60.26
18Jared MARTIN55.13
18Jason O'DONNELL55.13
20Mike PERLMUTTER50.00
21Anthony LIDDLE47.44
21Scott RICHARDS47.44
23Jonathan HILL42.31
23Laurent JOLY42.31
23Christopher MANN42.31
26Joe SIESTO34.62
27Dave HILL32.05
27Andrew KLOCK32.05
29Brent WADDINGTON26.92
29Phil WEISSERT26.92
31Peter RUSSO21.79
32Jessica CORALLO19.23
32Garrick LIDDLE19.23
32Justin MULLADY19.23
32Chris PARRY19.23
32Matt SORIANO19.23
32Jay TIAN19.23
32Joe WHEELER19.23
32Marc ZERFAS19.23

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