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.

DipCon 43 2010
BADAss Whipping
Date April 16-18, 2010 Place San Francisco
Number of players47 Number of rounds4 Number of boards21
Coeff 115.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Eric MEAD98.94
2Chris BRAND96.81
3Adam SIGAL94.68
4Steve COOLEY92.55
5Don WILLIAMS90.43
6Daniel BYARS88.30
7Edi BIRSAN86.17
8Tom KOBRIN84.04
9Robert VOLLMAN81.91
10Matt SHIELDS79.79
11Richard BLISS77.66
12Louis ABRONSON75.53
13Christian MACDONALD73.40
14Mark ZOFFEL71.28
15Mike HALL69.15
16David MALETSKY67.02
17Thomas HAVER64.89
18Graham WOODRING62.77
19Condy CREEK60.64
20David WAN58.51
21Joshua SHANK56.38
22Kevin O'KELLY54.26
23Tom HILTON52.13
24Andy BARTALONE50.00
25Peter YEARGIN47.87
26Buz EDDY45.74
27Andy HULL43.62
28Youssri HELMY41.49
29Conrad WOODRING39.36
30Robert FLETCHER37.23
31Jared WHITE35.11
32James GELUSO32.98
33Tim HAUSLER30.85
34Karim HELMY28.72
35Nick BENDLER26.60
36Darin LEVILOFF24.47
37Brian JOHNSON22.34
38Nick PARDINI20.21
39Brian FIORINO18.09
40Don DEL GRANDE15.96
41Alex MENNAN13.83
42Justin AUCH11.70
43Jack TWILLEY9.57
44Alessio CEI7.45
44Josh GRECH7.45
44Anthony PELLINACCI7.45

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