3.51 The challenge must be met if the rating system is to succeed, if it is to produce ratings that will satisfy the players and the users of the rating list.
| Player | Rounds | Elo | SRM |
|---|---|---|---|
| davidsun | 21 | 2950 | 1936 |
| Rating | perf | err | err2 | |ΔR| | ΔR min | ΔR max | max | R | rank |
|---|---|---|---|---|---|---|---|---|---|
| SRM | 0.619 | 1.100 | 1.598 | 105.9 | -184 | 462 | 1999 | 1936 | 473 |
| SRMFix | 0.587 | 1.161 | 1.703 | 103.5 | -103 | 797 | 2428 | 2410 | 424 |
| Odd | 0.494 | 1.164 | 1.713 | 102.9 | -80 | 886 | 2806 | 2793 | 362 |
| EloSRM | 0.502 | 1.166 | 1.712 | 105.2 | -87 | 870 | 2963 | 2950 | 365 |
| initial | 0.692 | 1.273 | 1.802 | 153.3 | -158 | 648 | 2988 | 2866 | 344 |
| # | date | round | division | rank | seed | perf | Δ Elo | Elo new | Elo rank | Δ SRM | SRM new | SRM rank |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 21 | 2009-08-25 | SRM 447 | 1 | 189 | 137.89 | -0.46 | -13 | 2950 | 365 | 13 | 1936 | 473 |
| 20 | 2009-08-08 | SRM 446 | 1 | 25 | 205.92 | 3.04 | 113 | 2963 | 349 | 190 | 1923 | 491 |
| 19 | 2009-04-30 | SRM 439 | 1 | 380 | 157.83 | -1.39 | -43 | 2849 | 512 | -184 | 1733 | 787 |
| 18 | 2009-03-14 | TCO09 Round 2 | 1 | 499 | 300.45 | -0.73 | -26 | 2892 | 436 | -82 | 1917 | 519 |
| 17 | 2009-03-11 | SRM 436 | 1 | 195 | 198.67 | 0.03 | 9 | 2918 | 386 | 18 | 1999 | 420 |
| 16 | 2009-03-07 | TCO09 Round 1 | 1 | 131 | 467.62 | 1.84 | 86 | 2909 | 399 | 121 | 1981 | 438 |
| 15 | 2009-02-24 | TCO09 Qual 1 | 1 | 319 | 174.47 | -0.87 | -28 | 2823 | 529 | -29 | 1860 | 580 |
| 14 | 2009-02-12 | SRM 435 | 1 | 58 | 207.77 | 1.84 | 109 | 2851 | 489 | 132 | 1889 | 538 |
| 13 | 2009-01-06 | SRM 432 | 1 | 216 | 216.77 | 0.00 | 11 | 2742 | 717 | 14 | 1757 | 767 |
| 12 | 2008-11-25 | SRM 427 | 1 | 240 | 173.79 | -0.47 | -23 | 2731 | 716 | -27 | 1743 | 781 |
| 11 | 2008-09-04 | SRM 416 | 1 | 331 | 192.19 | -0.78 | -41 | 2754 | 638 | -54 | 1770 | 729 |
| 10 | 2008-07-10 | SRM 409 | 1 | 69 | 249.70 | 1.86 | 117 | 2795 | 529 | 147 | 1824 | 622 |
| 9 | 2008-07-01 | SRM 408 | 1 | 190 | 231.41 | 0.28 | 37 | 2678 | 769 | 51 | 1677 | 892 |
| 8 | 2008-05-01 | SRM 400 | 1 | 348 | 307.39 | -0.53 | -35 | 2641 | 821 | -106 | 1626 | 960 |
| 7 | 2008-04-15 | SRM 398 | 1 | 226 | 247.80 | 0.13 | 28 | 2676 | 739 | 22 | 1732 | 745 |
| 6 | 2008-03-06 | SRM 392 | 1 | 252 | 321.43 | 0.35 | 57 | 2649 | 772 | 46 | 1710 | 793 |
| 5 | 2008-01-09 | SRM 387 | 1 | 274 | 189.99 | -0.53 | -45 | 2592 | 853 | -66 | 1664 | 849 |
| 4 | 2007-12-04 | SRM 380 | 1 | 315 | 173.20 | -0.89 | -87 | 2637 | 718 | -143 | 1730 | 700 |
| 3 | 2007-11-14 | SRM 376 | 1 | 79 | 281.26 | 1.83 | 327 | 2724 | 524 | 211 | 1873 | 490 |
| 2 | 2007-10-04 | SRM 369 | 1 | 535 | ||||||||
| 1 | 2007-10-02 | SRM 368 | 2 | 10 | 444.80 | 5.48 | 870 | 2397 | 1315 | 462 | 1662 | 791 |