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Career ratings for: Riego Prieto, Victorio

  Date of rating  

World Rank Rating +/- Age
03/31/1960#368214871
06/30/1960#290215271
09/30/1960#292215271
12/31/1960#327214971
03/31/1961Inactive214281
06/30/1961Inactive214881
09/30/1961Inactive214681
12/31/1961Inactive214581
03/31/1969#582212466
06/30/1969#576212766
09/30/1969#579212766
12/31/1969#462224666
02/28/1970#524224466
04/30/1970#544211775
06/30/1970#538212075
08/31/1970#545212175
10/31/1970#589212475
12/31/1970#481224375
02/28/1971#462226569
04/30/1971#511214474
06/30/1971#520214574
08/31/1971#541214674
10/31/1971#492214774
12/31/1971#423226774
02/29/1972Inactive226679
04/30/1972Inactive214184
06/30/1972Inactive214284
08/31/1972Inactive214284
10/31/1972Inactive214184
12/31/1972Inactive226684
01/31/1996Inactive217679
02/29/1996Inactive218079
03/31/1996Inactive218179
04/30/1996Inactive218279
05/31/1996Inactive218379
06/30/1996Inactive218279
07/31/1996Inactive218079
08/31/1996Inactive217979
09/30/1996#3890218575
10/31/1996#3887218475
11/30/1996Inactive219077
12/31/1996Inactive219377
01/31/1997Inactive216979
02/28/1997Inactive217279
03/31/1997Inactive217379
04/30/1997Inactive217379
05/31/1997Inactive217379
06/30/1997Inactive217379
07/31/1997Inactive217379
08/31/1997Inactive217079
09/30/1997Inactive215681
10/31/1997Inactive215681
11/30/1997Inactive216282
12/31/1997Inactive216482

These ratings, calculated for Riego Prieto, Victorio, 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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