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.

DipCon 44 2011
Carnage on the mountain
Date November 4-6, 2011 Place Lake Moray
Number of players36 Number of rounds3 Number of boards13
Coeff 112.29 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Chris MARTIN98.61
2Peter YEARGIN95.83
3Peter MCNAMARA93.06
4David MALETSKY90.28
5Roland COOKE87.50
6Mike HALL84.72
6Jim O'KELLEY84.72
8Jason O'DONNELL79.17
9Chris BARFIELD76.39
10Joe WHEELER73.61
11Chris CAMPBELL70.83
12Steve COOLEY68.06
13Phil WEISSERT65.28
14Matt SHIELDS62.50
15Scott HOUSER59.72
16Kevin O'KELLY56.94
18Adam SIGAL51.39
19Chris MAZZA48.61
20Andy BARTALONE45.83
21Jonathan HILL43.06
22David CHENG40.28
23Carl ELLIS37.50
24Pete MARINARO34.72
25Jim BURGESS31.94
27Michael BINDER26.39
28Brent WADDINGTON23.61
29Chris YOUNG20.83
30Brad BLITSTEIN18.06
31Walter HUNT15.28
32Marguerite MAZZA12.50
32Robert ROUSSE12.50
33Tom DORMAN9.72
33Jimmy ROUSSE9.72

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