4.75 Comparison of past and present is one of the most fascinating applications of the rating system.
| Player | Rounds | Elo | SRM |
|---|---|---|---|
| hdu8600 | 38 | 2520 | 1390 |
| Rating | perf | err | err2 | |ΔR| | ΔR min | ΔR max | max | R | rank |
|---|---|---|---|---|---|---|---|---|---|
| initial | 0.258 | 0.627 | 0.964 | 75.4 | -229 | 450 | 2473 | 2383 | 1193 |
| SRMFix | 0.190 | 0.636 | 0.933 | 48.2 | -125 | 627 | 2021 | 2013 | 1487 |
| EloSRM | 0.143 | 0.637 | 0.945 | 49.0 | -117 | 720 | 2520 | 2520 | 1456 |
| SRM | 0.607 | 0.926 | 1.296 | 88.2 | -217 | 307 | 1575 | 1390 | 2074 |
| # | date | round | division | rank | seed | perf | Δ Elo | Elo new | Elo rank | Δ SRM | SRM new | SRM rank |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 38 | 2009-04-30 | SRM 439 | 1 | 187 | 288.66 | 0.63 | 23 | 2520 | 1456 | 79 | 1390 | 2074 |
| 37 | 2009-03-24 | SRM 437 | 1 | 354 | 453.58 | 0.33 | 14 | 2497 | 1540 | 60 | 1311 | 2648 |
| 36 | 2009-03-11 | SRM 436 | 1 | 573 | 437.85 | -0.39 | -10 | 2483 | 1584 | -59 | 1251 | 3060 |
| 35 | 2009-03-07 | TCO09 Round 1 | 1 | 1510 | 838.28 | -0.84 | -22 | 2493 | 1544 | -191 | 1310 | 2623 |
| 34 | 2009-02-24 | TCO09 Qual 1 | 1 | 115 | 453.27 | 1.98 | 46 | 2515 | 1383 | 126 | 1501 | 1438 |
| 33 | 2009-02-12 | SRM 435 | 1 | 124 | 355.00 | 1.52 | 47 | 2468 | 1628 | 159 | 1375 | 2156 |
| 32 | 2009-01-06 | SRM 432 | 1 | 396 | 369.26 | -0.10 | -1 | 2421 | 1806 | 4 | 1216 | 3434 |
| 31 | 2008-12-23 | SRM 431 | 1 | 455 | 322.55 | -0.54 | -14 | 2422 | 1795 | -138 | 1212 | 3458 |
| 30 | 2008-12-20 | SRM 430 | 1 | 374 | 450.09 | 0.27 | 12 | 2436 | 1730 | 44 | 1350 | 2385 |
| 29 | 2008-12-14 | TC China 08 - Finals | 1 | 164 | 121.54 | -0.43 | -8 | 2424 | 1761 | 35 | 1306 | 2704 |
| 28 | 2008-12-12 | TC China 08 - 1E | 1 | 154 | 45.30 | -1.76 | -33 | 2432 | 1732 | -73 | 1271 | 2960 |
| 27 | 2008-12-11 | SRM 429 | 1 | 450 | 392.58 | -0.20 | -4 | 2465 | 1615 | -20 | 1344 | 2426 |
| 26 | 2008-12-10 | TC China 08 - 1D | 1 | 35 | 38.66 | 0.14 | 9 | 2469 | 1576 | 68 | 1364 | 2278 |
| 25 | 2008-12-04 | TC China 08 - 1C | 1 | 35 | 42.77 | 0.29 | 14 | 2460 | 1625 | 86 | 1296 | 2777 |
| 24 | 2008-12-02 | SRM 428 | 1 | 620 | 392.88 | -0.66 | -24 | 2445 | 1675 | -210 | 1210 | 3542 |
| 23 | 2008-11-25 | SRM 427 | 1 | 229 | 307.41 | 0.42 | 23 | 2469 | 1579 | 53 | 1420 | 1905 |
| 22 | 2008-11-12 | SRM 425 | 1 | 526 | 413.87 | -0.35 | -12 | 2446 | 1643 | -56 | 1367 | 2235 |
| 21 | 2008-11-06 | SRM 424 | 1 | 134 | 383.00 | 1.52 | 68 | 2457 | 1591 | 148 | 1423 | 1880 |
| 20 | 2008-10-28 | SRM 423 | 2 | 27 | 45.59 | 0.76 | 24 | 2390 | 1839 | 78 | 1275 | 2904 |
| 19 | 2008-10-08 | SRM 421 | 2 | 53 | 66.51 | 0.33 | 16 | 2365 | 1923 | 78 | 1197 | 3754 |
| 18 | 2008-10-02 | SRM 420 | 1 | 557 | 413.74 | -0.43 | -20 | 2349 | 1957 | -92 | 1119 | 4773 |
| 17 | 2008-07-31 | SRM 412 | 1 | 492 | 383.16 | -0.36 | -14 | 2370 | 1839 | -58 | 1211 | 3629 |
| 16 | 2008-07-23 | SRM 411 | 2 | 31 | 46.36 | 0.58 | 21 | 2384 | 1780 | 81 | 1269 | 3048 |
| 15 | 2008-07-19 | SRM 410 | 1 | 396 | 433.09 | -0.23 | -9 | 2363 | 1843 | -17 | 1188 | 3843 |
| 14 | 2008-07-10 | SRM 409 | 1 | 462 | 424.85 | -0.12 | -2 | 2372 | 1804 | 4 | 1205 | 3647 |
| 13 | 2008-06-26 | SRM 407 | 1 | 572 | 384.50 | -0.58 | -31 | 2374 | 1764 | -217 | 1201 | 3676 |
| 12 | 2008-06-08 | College Tour West China | 1 | 60 | 82.12 | 0.45 | 31 | 2405 | 1633 | 76 | 1418 | 1914 |
| 11 | 2008-06-05 | SRM 404 | 1 | 506 | 399.82 | -0.34 | -18 | 2375 | 1726 | -53 | 1342 | 2442 |
| 10 | 2008-05-28 | College Tour Fudan | 1 | 19 | 20.74 | 0.13 | 17 | 2393 | 1674 | 45 | 1395 | 2061 |
| 9 | 2008-05-25 | East China Round 2 | 1 | 60 | 45.00 | -0.42 | -24 | 2376 | 1715 | -10 | 1350 | 2396 |
| 8 | 2008-05-06 | SRM 401 | 1 | 418 | 424.27 | 0.02 | 10 | 2400 | 1628 | 14 | 1360 | 2121 |
| 7 | 2008-05-03 | East China Round 1 | 1 | 80 | 74.74 | -0.10 | 4 | 2390 | 1635 | 53 | 1346 | 2200 |
| 6 | 2008-05-01 | SRM 400 | 1 | 337 | 442.66 | 0.37 | 62 | 2386 | 1646 | 78 | 1293 | 2339 |
| 5 | 2008-04-23 | SRM 399 | 1 | 377 | 276.91 | -0.49 | -62 | 2324 | 1855 | -188 | 1215 | 2941 |
| 4 | 2008-04-15 | SRM 398 | 1 | 339 | 413.66 | 0.29 | 80 | 2386 | 1641 | 26 | 1403 | 1723 |
| 3 | 2007-08-30 | TCCC07 Round 1B | 1 | 373 | 182.07 | -1.03 | -117 | 2306 | 1536 | -198 | 1377 | 1602 |
| 2 | 2007-08-18 | TCCC07 Qual 1 | 1 | 199 | 382.94 | 0.94 | 195 | 2423 | 1148 | 68 | 1575 | 961 |
| 1 | 2007-05-15 | SRM 349 | 2 | 29 | 418.46 | 3.85 | 720 | 2227 | 1605 | 307 | 1507 | 1098 |