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Career ratings for: Ustinov, Georgy I

  Date of rating  

World Rank Rating +/- Age
03/31/1961#302230675
06/30/1961Inactive230277
09/30/1961Inactive230077
12/31/1961Inactive230577
03/31/1962Inactive229886
06/30/1962Inactive229488
09/30/1962Inactive229388
12/31/1962Inactive229988
03/31/1963Inactive229588
06/30/1963Inactive229089
09/30/1963Inactive228789
12/31/1963Inactive229189
03/31/1967Inactive236688
06/30/1967Inactive236189
09/30/1967Inactive236189
12/31/1967Inactive236289
03/31/1969Inactive234986
06/30/1969Inactive234686
09/30/1969Inactive234486
12/31/1969Inactive235186
02/28/1970Inactive233977
04/30/1970Inactive234382
06/30/1970Inactive233782
08/31/1970Inactive233982
10/31/1970Inactive234082
12/31/1970Inactive234482
02/28/1971Inactive233488
02/29/1972Inactive232982
04/30/1972Inactive233284
06/30/1972Inactive232984
08/31/1972Inactive232984
10/31/1972Inactive232684
12/31/1972Inactive232984
02/28/1975Inactive230281
04/30/1975Inactive230281
06/30/1975Inactive229881
08/31/1975Inactive229981
10/31/1975Inactive229881
12/31/1975Inactive230381

These ratings, calculated for Ustinov, Georgy I, 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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