4.75 Comparison of past and present is one of the most fascinating applications of the rating system.
| Player | Rounds | Elo | SRM |
|---|---|---|---|
| erlong | 20 | 1902 | 821 |
| Rating | perf | err | err2 | |ΔR| | ΔR min | ΔR max | max | R | rank |
|---|---|---|---|---|---|---|---|---|---|
| EloSRM | 0.096 | 0.493 | 0.621 | 36.2 | -46 | 88 | 1902 | 1902 | 5076 |
| initial | 0.116 | 0.496 | 0.658 | 59.8 | -96 | 238 | 1479 | 1479 | 4152 |
| SRMFix | 0.143 | 0.500 | 0.641 | 37.4 | -58 | 86 | 1366 | 1366 | 5200 |
| SRM | 0.184 | 0.572 | 0.746 | 59.8 | -136 | 113 | 1114 | 821 | 7266 |
| # | date | round | division | rank | seed | perf | Δ Elo | Elo new | Elo rank | Δ SRM | SRM new | SRM rank |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | 2009-11-05 | SRM 452 | 2 | 332 | 413.41 | 0.32 | 26 | 1902 | 5076 | 39 | 821 | 7266 |
| 19 | 2009-09-10 | SRM 448 | 2 | 156 | 523.74 | 1.75 | 88 | 1876 | 5175 | 113 | 782 | 7649 |
| 18 | 2009-06-13 | SRM 442 | 2 | 725 | 475.80 | -0.61 | -21 | 1788 | 5865 | -33 | 669 | 8866 |
| 17 | 2009-05-27 | SRM 441 | 2 | 727 | 497.24 | -0.82 | -27 | 1809 | 5667 | -81 | 702 | 8870 |
| 16 | 2009-04-30 | SRM 439 | 2 | 260 | 323.31 | 0.31 | 26 | 1836 | 5549 | 33 | 783 | 9651 |
| 15 | 2009-02-28 | TCO09 Qual 2 | 1 | 1062 | 1,100.00 | 0.05 | 9 | 1810 | 5763 | 20 | 750 | 10156 |
| 14 | 2009-02-24 | TCO09 Qual 1 | 1 | 1056 | 1,023.07 | -0.05 | 0 | 1801 | 5774 | -2 | 730 | 10318 |
| 13 | 2008-12-20 | SRM 430 | 2 | 484 | 423.28 | -0.53 | -21 | 1801 | 5983 | -54 | 732 | 10647 |
| 12 | 2008-12-02 | SRM 428 | 2 | 439 | 374.56 | -0.23 | -6 | 1822 | 5721 | -10 | 786 | 9840 |
| 11 | 2008-11-22 | SRM 426 | 2 | 277 | 447.42 | 0.69 | 50 | 1828 | 5560 | 53 | 796 | 9327 |
| 10 | 2008-11-06 | SRM 424 | 2 | 235 | 433.74 | 0.88 | 66 | 1778 | 6085 | 75 | 743 | 10311 |
| 9 | 2008-10-18 | SRM 422 | 2 | 659 | 551.50 | -0.51 | -29 | 1712 | 6813 | -64 | 668 | 11208 |
| 8 | 2008-09-20 | SRM 418 | 2 | 294 | 461.20 | 0.65 | 61 | 1740 | 6485 | 53 | 732 | 10793 |
| 7 | 2008-09-11 | SRM 417 | 2 | 623 | 504.96 | -0.30 | -17 | 1680 | 7171 | -46 | 679 | 11313 |
| 6 | 2008-09-04 | SRM 416 | 2 | 554 | 400.64 | -0.60 | -46 | 1697 | 6928 | -124 | 725 | 10818 |
| 5 | 2008-07-01 | SRM 408 | 2 | 277 | 406.64 | 0.55 | 70 | 1743 | 6275 | 22 | 849 | 8968 |
| 4 | 2008-06-08 | College Tour West China | 1 | 278 | 407.06 | 0.55 | 77 | 1673 | 6868 | -27 | 827 | 9116 |
| 3 | 2008-06-05 | SRM 404 | 2 | 477 | 517.24 | -0.23 | -22 | 1596 | 7900 | -124 | 854 | 8405 |
| 2 | 2008-05-28 | SRM 403 | 2 | 338 | 372.04 | 0.14 | 51 | 1618 | 7276 | -136 | 978 | 7112 |
| 1 | 2008-05-03 | East China Round 1 | 1 | 455 | 741.55 | -0.10 | 11 | 1568 | 7254 | -86 | 1114 | 3934 |