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 II 1990
Dixie 04 & DipCon 23
Date June 22-24, 1990 Place Chapel Hill
Number of players103 Number of rounds4 Number of boards34
Coeff 120.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Jason BERGMANN99.51
2Jeff BOHNER98.54
3Steve COOLEY97.57
4Jeff MCKEE96.60
5Erik ADENSTEDT95.63
6Matt MCVEIGH94.66
7Shaun DERRICK93.69
8Marc PETERS92.72
9Cathy OZOG91.75
10Tom MAINARDI90.78
11Felix DIWOK89.81
11Dan SELLERS89.81
13Eric NEWHOUSE87.86
14Mark STEGEMAN86.89
15Pete FUCHS85.92
16Bruce REIFF84.95
17Bruce ROBERTS83.98
18Stven CARLBERG83.01
19Lee, Jr. KENDTER82.04
20John CAIN81.07
21Lance ANDERSON80.10
22Hohn CHO79.13
23Alan STEWART78.16
24Jeff SANDOVAL77.18
25Julie MARTIN76.21
26Ken HAUSLE75.24
27Mark MURRAY74.27
28Chris KREMER73.30
29Mark BERCH72.33
30Ed AVERETT71.36
31Bill THOMPSON70.39
32Bill GALLAGHER69.42
33Charlie OTTE68.45
34Bill HUNTER67.48
35Dave MCCRUMB66.50
36Mark LEW65.53
37Mike PINKERTON64.56
37Russ SMITH64.56
39Bob AUBE62.62
40Mike GONSALVES61.65
41Mike MASTON60.68
42Dave PALMER59.71
44Dwayne SHREVE57.77
45Lee, Sr. KENDTER56.80
46Craig WHITE55.83
48Tom NASH53.88
49Derwood BOWEN52.91
50Dan MATHIAS51.94
50Steve SMITH51.94
52Steve NICEWARNER50.00
52Rainer PRAECEPTOR50.00
54Vince LEAMONS48.06
55Edi BIRSAN47.09
55Bob ODEAR47.09
57Jim YERKEY45.15
58Ron SPITZER44.17
59Leo YAKUTIS43.20
60Jacques Henri STRAUSS42.23
61Richard BERNETTE41.26
61Dick MARTIN41.26
63Rich CAMPBELL39.32
63Mike NANGLE39.32
65Frank JONES37.38
65Jack MCHUGH37.38
67Steve MOORE35.44
67David SCHLEGEL35.44
69Steve WILCOX33.50
70Ken SIMPSON32.52
71Andrew ENGLAND31.55
71Chris HATCH31.55
71Brad WILSON31.55
74Phil REYNOLDS28.64
74Tom SWIDER28.64
76Iain BOWEN26.70
76Don DEL GRANDE26.70
78David PUTNAM24.76
79Larry PEERY23.79
79Jay SHUFELDT23.79
81Frank ALEXANDER21.84
82Francis CAIN20.87
83Kythor ANDERSON19.90
83Gary BROWN19.90
83George, Jr. GREENE19.90
83Morgan GURLEY19.90

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