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Career ratings for: Perez Perez, Francisco Jose

  Date of rating  

World Rank Rating +/- Age
12/31/1943Inactive239978
12/31/1944Inactive239789
12/31/1945Inactive242789
12/31/1946Inactive240478
12/31/1947Inactive240089
12/31/1948Inactive237789
06/30/1955#258216371
12/31/1955#240215271
06/30/1956Inactive215381
12/31/1956Inactive214381
06/30/1957#275222571
12/31/1957#260221771
06/30/1958Inactive221181
12/31/1958#234229265
06/30/1959#212235061
12/31/1959#232232565
03/31/1960#239233662
06/30/1960#187235164
09/30/1960#187235064
12/31/1960#236232063
03/31/1961#281232951
06/30/1961#252233551
09/30/1961#248233650
12/31/1961#265232350
03/31/1962#273233351
06/30/1962#250233651
09/30/1962#249234051
12/31/1962#269233251
03/31/1963#284232552
06/30/1963#275232953
09/30/1963#259233653
12/31/1963#267232853
03/31/1964#311230253
06/30/1964#311230653
09/30/1964#293231153
12/31/1964#290232452
03/31/1965#334231652
06/30/1965#331231852
09/30/1965#322232252
12/31/1965#323230953
03/31/1966#329231757
06/30/1966#333231857
09/30/1966#340232557
12/31/1966#369229456
03/31/1967#383229860
06/30/1967#391230160
09/30/1967#376230560
12/31/1967#384229262
03/31/1968#441224160
06/30/1968#449224360
09/30/1968#455224360
12/31/1968#478223361
03/31/1969#477224467
06/30/1969#469224867
09/30/1969#467225067
12/31/1969#467224269
02/28/1970#561221465
04/30/1970#478222070
06/30/1970#473222070
08/31/1970#478222270
10/31/1970#507222670
12/31/1970#518221570
02/28/1971#524221674
04/30/1971Inactive222179
06/30/1971Inactive222479
08/31/1971Inactive222479
10/31/1971Inactive222880
12/31/1971Inactive221580
02/29/1972Inactive222584
06/30/1976#507226775
08/31/1976#501227175
10/31/1976#501227675
12/31/1976#537226975
02/28/1977#503227475
04/30/1977#519228075
06/30/1977Inactive227886
08/31/1977Inactive228286
10/31/1977Inactive228386
12/31/1977Inactive227386
02/28/1978Inactive227686
04/30/1978Inactive227786
01/31/1994Inactive223684
02/28/1994Inactive223484
03/31/1994Inactive223384
04/30/1994Inactive223284
05/31/1994Inactive223684
06/30/1994Inactive223984
07/31/1994Inactive223984
08/31/1994Inactive223784
09/30/1994Inactive224984
10/31/1994Inactive224984
11/30/1994Inactive225184
12/31/1994Inactive224884

These ratings, calculated for Perez Perez, Francisco Jose, 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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