World Diplomacy Database

The World Diplomacy Database


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WDD Battle Ranking System Scoring System Event's report Statistics

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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 DipCon XIX 2009
Origins & DipCon 42
Date June 25-28, 2009 Place Columbus
Number of players53 Number of rounds4 Number of boards23
Coeff 120.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Andrew GOFF99.06
2Dan LESTER97.17
3Jim O'KELLEY95.28
4Adam SIGAL93.40
5Edi BIRSAN91.51
6Conrad WOODRING89.62
7Christian MACDONALD87.74
8Sean COLMAN85.85
9Michael BINDER83.96
10Daniel SINGER82.08
11Jonathan HILL80.19
12Chris BRAND78.30
13Andy BARTALONE76.42
14Steve COOLEY74.53
15Paul PIGNOTTI72.64
16Peter YEARGIN70.75
17Kai HSIEH68.87
18Mark ZOFFEL66.98
19Chris MAZZA65.09
20Philip BURK63.21
21David MALETSKY61.32
22Tedd TRIMBATH59.43
23Matt SUNDSTROM57.55
24Jeremiah PETERSON55.66
25Alex AMANN53.77
26Michael SCHNEBLY51.89
27Brian ECTON50.00
28Don DEL GRANDE48.11
29A.N. DOYLE46.23
30Greg DUENOW44.34
31Robert ZAHN42.45
32Nathan COCKERILL40.57
33Christian PEDONE38.68
34Laurent JOLY36.79
35Doug BROWN34.91
36Elizabeth BOUDREAUX33.02
37David LEARY31.13
38Phil KILANOWSKI29.25
39Jason SEIFERT27.36
40Robert FENN25.47
41Chris LASKY23.58
42Ian ZERNECHEL21.70
43John DEXTRAZE19.81
44Don GLASS17.92
45Bob MABRY16.04
46Nick ROHN14.15
47Pete ROHN12.26
48Ted STEPHANI10.38
49Mike MORRISON8.49
50Brandon MOORE6.60
51Jeffrey VOHLERS4.72
52Joe LEVINSON2.83
53Linda LEVINSON0.94

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