Chessmetrics Ratings: 11th Birthday

#	Player	Rating	+/-
1	Riazantsev, Alexander	2332	66
2	Bonnet, Edouard	2301	66
3	Marinkovic, Milan	2296	67
4	Thiruchelvam, Thirumurugan	2260	62
5	Polgar, Judit	2155	69
6	Grachev, Boris	2148	73
7	McShane, Luke J	2136	70
8	Berczes, David	2134	71
9	Papp, Gabor	2130	75
10	Hera, Imre Jr	2113	73

About these ratings

All players on their 11th birthday

#
Player Rating +/- Best? 75%? Rating Date

1 Riazantsev, Alexander 2332 66 43.3% #3 08/31/1996: #1815

2 Bonnet, Edouard 2301 66 24.5% #4 05/28/2001: #1990

3 Marinkovic, Milan 2296 67 21.8% #4 09/30/1961: #303

4 Thiruchelvam, Thirumurugan 2260 62 8.4% #5 12/06/1999: #2617

5 Polgar, Judit 2155 69 0.5% #9 06/30/1987: #1127

6 Grachev, Boris 2148 73 0.5% #9 02/28/1997: #4318

7 McShane, Luke J 2136 70 0.2% #10 12/31/1994: #3616

8 Berczes, David 2134 71 0.2% #10 01/08/2001: #3892

9 Papp, Gabor 2130 75 0.3% #10 04/30/1998: #4628

10 Hera, Imre Jr 2113 73 0.1% #10 08/31/1997: #4697

11 Molnar, Laszlo 2112 73 0.1% #10 02/28/1995: #3909

For each player on this list, the rating they possessed on their 11th birthday is listed. That rating was the last one calculated while they were 10 years of age, so it was their "current" rating on the day they turned 11. Players who played an insufficient number of games in recent years will not appear on the list, even though you may see them on lists for younger and/or older birthdays. Any players who had been completely inactive for three years are removed from the list.

Definition of columns in the above list:

# refers to the player's all-time rank on this list, compared to all other players when they turned 11.

Player is the full name of the player. Click on the player's name to see a career progression of their ratings.

Rating is the calculated rating for each player on their 11th birthday.

+/- 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" and removed from the ranking list due to their infrequent play against rated opponents. Mathematically, a player's rating is an estimate of their exact strength on their 11th birthday. The +/- value represents the standard deviation of that estimate; the player's true strength on their 11th birthday 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.

Best? is the estimated likelihood that the player was stronger on their 11th birthday than anyone else turning 11. Since ratings are known to be inaccurate, it is possible that a lower-rated player was actually much stronger than their rating would indicate, and it is also possible that other players were weaker than their ratings would indicate. This number indicates the likelihood that the player was indeed the strongest player ever among players turning 11. On a particular list, it will add up to 100% across the complete list of all players. This value is only calculated for the top 100 players on any rating list.

75%? gives a 75%-confidence world ranking for the player. Because ratings are known to be inaccurate, even if a particular player had the third-highest rating ever, among players turning 11, we cannot say with 100% certainty that they were truly one of the three strongest 11-year-old players. This number indicates the all-time rank that we are 75% sure the player is "no worse than". Thus if a player has a value of #12 in this column, we are 75% sure that the player is one of the twelve strongest players ever to turn 11. This value is only calculated for the top 100 players on any rating list.

Date is the exact date that the rating applied to. Click on that date to see the sorted list of all players' ratings on that date.