World Diplomacy Database

The World Diplomacy Database


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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 VIII 1998
Dixie 12 & DipCon 31
Date July 6, 1998 Place Chapel Hill
Number of players77 Number of rounds4 Number of boards31
Coeff 120.00 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Chris MARTIN99.35
3Mark FASSIO96.75
4Edi BIRSAN95.45
5Manus HAND94.16
6Brian ECTON92.86
7Tom KOBRIN91.56
9Michael MC MILLIE88.96
9Mark WIGHTMAN88.96
11Rick DESPER86.36
12Vincent MOUS85.06
13Dan SCHLICK83.77
14Simon SZYKMAN82.47
15David NORMAN81.17
16Steve EMMERT79.87
17Carl WILLNER78.57
17Jim YERKEY78.57
19Jamie MCQUINN75.97
19Bruce REIFF75.97
21Pete RAUCH73.38
22Andy MARSHALL72.08
24Edwin TURNAGE69.48
26Ike PORTER66.88
27Hunter DAVIS65.58
28Scott MORRIS64.29
29Melinda HOLLEY62.99
30Mike GONSALVES61.69
31Jean-Christian IMBEAULT60.39
32Steve KOEHLER59.09
33Eric GRINNELL57.79
34Adam MELDROM56.49
35Jim O'KELLEY55.19
36Eddie ROTHENHEBER53.90
37Warren GOESLE52.60
38Larry PEERY51.30
39Buz EDDY50.00
40Hudson DEFOE48.70
41Don WILLIAMS47.40
42Bruno BERKEN46.10
43Sandy WIBLE44.81
44Mark MURRAY43.51
45Tom SCHNEIDER42.21
46Ryan EARLY40.91
47Mark MANLAPAS39.61
48Per WESTLING38.31
49Todd ROGERS37.01
51Jon MLINAR34.42
52Robert ANDLER33.12
53Ken MATHIAS31.82
54Heath GARDNER30.52
55Stephen MAURIS29.22
56Bruce DUEWER27.92
57Todd CRAIG26.62
58Brian LYNCH25.32
59Dan MATHIAS24.03
60Jean-Louis DELATTRE22.73
61Joel PEACHER21.43
62Bill THOMPSON20.13
63Don DEWSNAP18.83
64Jeremy MARIO17.53
65Ronald FISHER16.23
66David WILLIS14.94
67Don DEL GRANDE13.64
67Justin THOMPSON13.64
69Kevin BROWN11.04

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