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.

Tempest in a teapot IV 2002
Date October 11-13, 2002 Place Washington
Number of players45 Number of rounds3 Number of boards17
Coeff 114.86 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Conrad WOODRING98.89
2Andy BARTALONE96.67
3Thomas PASKO94.44
4Martin SMITH92.22
5Edward HAWTHORNE90.00
6Grant FLOWERS87.78
7Rick DESPER85.56
8Roy RINK83.33
9Jeff DWORNICKI81.11
10Spencer BERNARD78.89
10Chris MARTIN78.89
12David NORMAN74.44
13Edi BIRSAN72.22
14Doug FAUST70.00
14Ike PORTER70.00
16Jerry FEST65.56
17Eric CHEN63.33
18Brian ECTON61.11
19Nathan BARNES58.89
20Mike BARNO56.67
21Jeff LADD54.44
21Dan MATHIAS54.44
21Al UGAZ54.44
21Wes WAGNER54.44
21Donald WOODRING54.44
26Simon SZYKMAN43.33
27Jason MCCONNEY41.11
27Matt SHIELDS41.11
29David WATSON36.67
30Eric HUNTER34.44
30Bruce RAY34.44
32Rich O'BRIEN30.00
32Graham WOODRING30.00
35Stephen MAURIS23.33
35Joe WHEELER23.33
35Roger YONKOSKI23.33
39Marlin PIERCE14.44
40Manus HAND12.22

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