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.

Carnage on the mountain 2015
Date November 6-8, 2015 Place Killington
Number of players33 Number of rounds3 Number of boards12
Coeff 111.43 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Jim O'KELLEY98.48
2Nicolas SAHUGUET95.45
3Andy BARTALONE92.42
4Graham WOODRING89.39
5Siobhan NOLEN86.36
6Brad BLITSTEIN83.33
7Nicholas DELATEUR80.30
8Emily POLLOCK77.27
9Laurent JOLY74.24
10Donald WOODRING71.21
11Jason O'DONNELL68.18
12Eric GRINNELL65.15
13Jay HEUMANN62.12
14Peter YEARGIN59.09
15Scott RICHARDS56.06
16Jason MASTBAUM53.03
17Randy LAWRENCE-HURT50.00
18Chris CAMPBELL46.97
19Dariusz MURAKOWSKI43.94
20Dan POLLOCK40.91
21Mike PERLMUTTER37.88
22Roland COOKE34.85
23David CHENG31.82
24Matt LANGER28.79
24Matt SUNDSTROM28.79
26Monique PRIESTLEY22.73
27Carl ELLIS19.70
28Brent WADDINGTON16.67
29Chris MARTIN13.64
31Kalynn UNKNOWN7.58
32Robert ROUSSE4.55
33Mary WITTIG1.52

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