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Career ratings for: Cocchi, Andrea

  Date of rating  

World Rank Rating +/- Age
11/20/2000#3975211973
11/27/2000#3969212073
12/04/2000#3975212173
12/11/2000#3938212173
12/18/2000#3959212273
12/25/2000#3965212273
01/01/2001#3982212373
01/08/2001#3957212373
01/15/2001#3957212373
01/22/2001#3965212473
01/29/2001#3986212473
02/05/2001#3943212273
02/12/2001#3749212273
02/19/2001#3717213166
02/26/2001#3706213166
03/05/2001#2643224767
03/12/2001#2644224567
03/19/2001#2641224467
03/26/2001#2644224467
04/02/2001#2646224467
04/09/2001#2646224367
04/16/2001#2647224467
04/23/2001#2654224367
04/30/2001#2713224167
05/07/2001#2730224267
05/14/2001#2728224267
05/21/2001#2725224167
05/28/2001#2763223767
06/04/2001#2762223767
06/11/2001#2742223967
06/18/2001#2746224067
06/25/2001#2739224067
07/02/2001#2735224167
07/09/2001#2734224167
07/16/2001#2732224267
07/23/2001#2741224167
07/30/2001#2750224067
08/06/2001#2767224167
08/13/2001#2753224267
08/20/2001#2758224367
08/27/2001#2841223867
09/03/2001#2843223967
09/10/2001#2859224067

These ratings, calculated for Cocchi, Andrea, 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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