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Career ratings for: Laflair, R.

  Date of rating  

World Rank Rating +/- Age
04/30/1993#1956228873
05/31/1993#1985228473
06/30/1993#1745230874
07/31/1993#1747230774
08/31/1993#1790230674
09/30/1993#1788230774
10/31/1993#1803230774
11/30/1993#1842230674
12/31/1993#1815231074
01/31/1994#1979230175
02/28/1994#1964230475
03/31/1994#1957230475
04/30/1994Inactive227883
05/31/1994Inactive227983
06/30/1994Inactive230184
07/31/1994Inactive230284
08/31/1994Inactive230084
09/30/1994Inactive230184
10/31/1994Inactive229984
11/30/1994Inactive230084
12/31/1994Inactive230284
01/31/1995Inactive229285
02/28/1995Inactive229585
03/31/1995Inactive229685

These ratings, calculated for Laflair, R., incorporate all games (against rated opponents) played in the year before the "Date of rating", along with the ratings that were already calculated one year previously. If a player has an insufficient number of games in recent years, there may be gaps in the list, even though you may see ratings listed on previous and/or subsequent dates. Whenever a player has played no rated games for three straight years, or dies, they are removed from the list.

Definition of columns in the above list:

Date of rating is the "effective date" of the rating. The rating calculation does not include any games occurring after the "Date of rating".

World Rank refers to the player's world rank on that date.

Rating is the calculated rating for the player, as of the "Date of Rating". This represents the player's estimated strength on the following day.

+/- is the standard deviation of the player's rating estimate. It is based on a geometric average of the number of rated games played in past years. Players who play very frequently will have a smaller +/- value, indicating a greater confidence in the accuracy of their rating. Players whose +/- value exceeds 76 are classified as "Inactive" due to their infrequent play against rated opponents. Mathematically, a player's rating is an estimate of their exact strength on the day after the "Date of Rating". The +/- value represents the standard deviation of that estimate; the player's true strength on that date should be within one standard deviation of their calculated rating approximately 68% of the time, and within two standard deviations of their calculated rating approximately 95% of the time.

Age is the player's exact age in years, on the "Date of Rating". If a player's age is displayed as a link, that means that this rating was active at the time of their next birthday. Click on the link to see the sorted list of all players' ratings on their birthdays when turning that same age.

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