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WDD Battle Ranking System Scoring System Event's report Statistics

Other ranking system

Dip Pouch Tournament Rating
AuthorMatt Shields Last Update2019-10-09
International ranking National ranking
List of included tournaments List of included circuits
Year
Permanent
20162015201420132012201120102009
20082007200620052004200320022001

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.


United States Diplomacy Championship 2016
GenCon Indianapolis
Date August 4-7, 2016 Place Indianapolis
Number of players60 Number of rounds5 Number of boards13
Coeff 119.14 Coeff 2- Coeff 3-

RankFirstName LastNameLoc.Nat.Score
1Dan MCNEILL99.17
2Eli KLEIN97.50
3Greg VAUGHAN95.83
4Jason RICE94.17
5Robert ZAHN92.50
6Erich ZAHN90.83
7Brian ZAHN89.17
8Anton WILSBACH87.50
9Chuck POWELL85.83
10Doug MOORE84.17
11David WYETH82.50
12Tad RINGO80.83
13Greg MAY79.17
13Stephen STOFKO79.17
15Geoff MIZE75.83
16Chris JOHNSON37.50
17Jared HOLLEY72.50
17Michael PERKINS72.50
17Ed SUMMERS72.50
20Jennifer GROULING67.50
21Brian CHASE65.83
21Matt SEDARES65.83
23Larry HELLER62.50
24Joshua GUM60.83
25Alex COLLINS59.17
26Tanner FISHER57.50
26Steven LAFOLLETTE57.50
26Eric SUMMERS57.50
26Dave WILLIAMS57.50
30Erik LARSEN50.83
30Mike LEE50.83
30Josh STUECK50.83
33Lee CLENDEMEN45.83
33Trevor NERPAL45.83
33Chris OLIVEIRA45.83
33Matt ORESKY45.83
33Chris SHIPLEY45.83
38Jeff CROFF37.50
38Chris JOHNSON37.50
38Robin ROTHBARD37.50
38John WALKER37.50
42David GOTTSEGEN30.83
42Joe HENZLER30.83
42Dwight SULLIVAN30.83
45Aldin BARNES25.83
45Todd COHN25.83
45Carol EDDY25.83
45Minch FONG25.83
45Richard GRIMES25.83
45Mike KIRCHHOFF25.83
45Chris PETERSON25.83
45Tom PHENICIE25.83
45John RICKERT25.83
45Jennifer SNIDER25.83
45Phillip SOWDERS25.83
45James SULLIVAN25.83
45Spencer THAL25.83
45Dan WOHLMUTH25.83
45Rick WYZYNKSI25.83
46Rogue JUDGES24.17

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