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Career ratings for: Prelati, Maurizio

  Date of rating  

World Rank Rating +/- Age
01/31/1998#4618212172
02/28/1998#4639211972
03/31/1998#4662211972
04/30/1998#4702211972
05/31/1998#4720211872
06/30/1998#4774211872
07/31/1998#4802211972
08/31/1998#4878211872
09/30/1998#4940211972
10/31/1998#4989212072
11/30/1998#5051211772
12/31/1998#5090211872
01/11/1999#4770211872
01/18/1999#4778211872
01/25/1999#4790211872
02/01/1999Inactive211482
02/08/1999Inactive211482
02/15/1999Inactive211482
02/22/1999Inactive211382
03/01/1999Inactive211282
03/08/1999Inactive211482
03/15/1999Inactive211382
03/22/1999Inactive211382
03/29/1999Inactive211382
04/05/1999Inactive211382
04/12/1999Inactive211382
04/19/1999Inactive211382
04/26/1999Inactive211382
05/03/1999Inactive211282
05/10/1999Inactive211182
05/17/1999#4121212175
05/24/1999#4142212175
05/31/1999#4163212175
06/07/1999#4150212175
06/14/1999#4160212175
06/21/1999#4173212175
06/28/1999#4182212175
07/05/1999#4164212175
07/12/1999#4183212175
07/19/1999#4192212175
07/26/1999#4233212275
08/02/1999#4173212175
08/09/1999#4185212275
08/16/1999#4208212275
08/23/1999#4247212175
08/30/1999#4256212175
09/06/1999#4178212275
09/13/1999#4207212175
09/20/1999#4220212275
09/27/1999#4237212275
10/04/1999#4149212175
10/11/1999#4173212175
10/18/1999#4223212175
10/25/1999#4241212175
11/01/1999#4073212175
11/08/1999#4088212175
11/15/1999#4110212275
11/22/1999#4137212175
11/29/1999#4167212275
12/06/1999#4088212175
12/13/1999#4112212175
12/20/1999#4124212075
12/27/1999#4142212075
01/03/2000#4107212275
01/10/2000#4128212375
01/17/2000#4155212275
01/24/2000#4169212375
01/31/2000#4171212375
02/07/2000Inactive212080
02/14/2000Inactive211980
02/21/2000Inactive212180
02/28/2000Inactive212180
03/06/2000Inactive211980
03/13/2000Inactive211880
03/20/2000Inactive211880
03/27/2000Inactive211980
04/03/2000Inactive211980
04/10/2000Inactive211880
04/17/2000Inactive211880
04/24/2000Inactive211780
05/01/2000Inactive211780
05/08/2000Inactive211680
05/15/2000Inactive211780
05/22/2000Inactive211685
05/29/2000Inactive211585
06/05/2000Inactive211585
06/12/2000Inactive211685
06/19/2000Inactive211585
06/26/2000Inactive211585
07/03/2000Inactive211585
07/10/2000Inactive211685
07/17/2000Inactive211685
07/24/2000Inactive211685
07/31/2000Inactive211685
08/07/2000Inactive211585
08/14/2000Inactive211585
08/21/2000Inactive211685
08/28/2000Inactive211685
09/04/2000Inactive211585
09/11/2000Inactive211685
09/18/2000Inactive211685
09/25/2000Inactive211685
10/02/2000Inactive211485
10/09/2000Inactive211485
10/16/2000Inactive211585
10/23/2000Inactive211585
10/30/2000Inactive211585
11/06/2000Inactive211685
11/13/2000Inactive211585
11/20/2000Inactive211485
11/27/2000Inactive211585
12/04/2000Inactive211685
12/11/2000Inactive211585
12/18/2000Inactive211585
12/25/2000Inactive211585
01/01/2001Inactive211585
01/08/2001Inactive211785
01/15/2001Inactive211785
01/22/2001Inactive211885
01/29/2001Inactive211885
02/05/2001Inactive211785

These ratings, calculated for Prelati, Maurizio, 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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