Basics for ranking system
Last update = EMA General Assembly May 25th, 2017
A major update launched from January 1st, 2018. Detailed information is available here.
Base rank
A player's ranking is always between 0 and 1000. In each MERS tournament he can obtain a base rank between 0 and 1000. The player's total ranking is a weighted average of his obtained base ranks from the tournaments he has participated in.
A player who wins all his tournaments, will have a total ranking of 1000.
A player who loses all this tournaments, will have a total ranking of 0.
Weight
General
The weights of MERS tournaments are calculated by taking into account the characteristics of the events, including:
- The number of rounds played
- The number of participating players
- The number of participating countries
- The need to qualify
Weight calculation
The weight of the tournament corresponds to TOTAL_MERS = Weight_duration + Weight_players + Weight_countries + Weight_qualif.
Duration
(1)
Weight_duration
(1)
Players
(2)
Weight_players
(2)
Countries
(3)
Weight_countries
(3)
Qualification
(4)
Weight_qualif
(4)
1 Day
+1
X <= 40
+0
X <= 5
+0
NO
+0
2 Days
+2
41 <= X <= 80
+0.5
6 <= X <= 9
+0.5
YES
+1
3 Days
+3
X > 80
+1
X >= 10
+1
(1) Number of rounds (Weight_duration)
One day tournament accounts for MERS-1.
Two days tournament accounts for MERS-2.
Three days tournament accounts for MERS-3.
(2) Number of participating players (Weight_players)
If the number of player is greater than 40, the weight of tournament gets an extra MERS-0,5 point.
If the number of player is greater than 80, the weight of tournament gets an extra MERS-1 point.
Substitute players (maximum 3) are accounted in the calculation of participating players.
(3) Number of participating countries (Weight_countries)
If the number of participating countries is greater than 5, the weight of tournament gets an extra MERS-0,5 point.
If the number of player is equal or greater than 10, the weight of tournament gets an extra MERS-1 point.
Substitute players are not accounted in the calculation of participating countries.
(4) Tournaments with qualification (Weight_qualif)
If the participation is subject to qualification that is supervised by EMA (such as OEMC and ERMC tournaments), the weight of the tournament gets an extra MERS-1 point.
Examples
Duration
Countries
Players
Weight_duration
Weight_countries
Weight_players
Weight_qualif
Total weight
1 Day
3
40
+1
+0
+0
+0
1
2 Days
4
44
+2
+0
+0
+0
2
2 Days
7
92
+2
+0.5
+1
+0
3.5
5 Days OEMC
20
220
+3
+1
+1
+1
6
Contribute to the MERS
Also, player's older results count less towards his ranking, than his more recent results do.
- Tournaments that occurred within one year count for 100%
- Tournaments older than one year count for 50%
- Tournaments older than two years no longer contribute to the MERS.
Minimum requirement
To establish a representative ranking five results are needed. A player is required to have participated in at least two tournaments to appear on the ranking and a player with less than five tournaments is given a result of 0 (weight 1) for each missing tournament.
Calculation
A player's base rank in a tournament is based on his place in the tournament compared to the other participants:
- If you win you get a base rank of 1000.
- If you are in the middle of the field you get a base rank close to 500.
- If you are number 75 out of 100 you get a base rank of 252.
- If you are last of 100 players, you get a base rank of 0.
The base rank is calculated as follows:
- Find the number of player's you have beaten by taking the number of players and subtract your position.
- Divide by (number of players minus 1).
- Then multiply by 1000 to avoid small numbers.
Example: there are 100 players. Consider the player who got the 25th place. Base rank: (100-25) / (100-1) * 1000 = 757.
Averaging
From January 1st 2018, rules change : It's composed by 2 parts.
First part is made with average of 5 during last two years and 80% of the remaining tournaments (rounded up). Note that all tournaments are rated differently (with weight) and count less in the time. A player with less than required tournaments is given a result of 0 (weight 1) for each missing tournament.
For example:
Second part is made with average of 4 best results (base rank) during last two years. Note that all tournaments are rated differently (with weight) and count less in the time. A player with less than required tournaments is given a result of 0 (weight 1) for each missing tournament.
