4.75 Comparison of past and present is one of the most fascinating applications of the rating system.
| Player | Rounds | Elo | SRM |
|---|---|---|---|
| AhmadAboBakr | 4 | 1558 | 539 |
| Rating | perf | err | err2 | |ΔR| | ΔR min | ΔR max | max | R | rank |
|---|---|---|---|---|---|---|---|---|---|
| SRMFix | -0.207 | 0.225 | 0.274 | 32.2 | -52 | 9 | 1209 | 1089 | 11133 |
| initial | -0.178 | 0.227 | 0.264 | 27.3 | -52 | 12 | 1212 | 1114 | 11741 |
| EloSRM | -0.171 | 0.261 | 0.290 | 51.3 | -56 | 88 | 1675 | 1558 | 9334 |
| Odd | -0.163 | 0.273 | 0.300 | 53.2 | -54 | 104 | 1549 | 1440 | 9193 |
| SRM | -0.659 | 0.659 | 0.699 | 165.2 | -202 | -137 | 998 | 539 | 11901 |
| # | date | round | division | rank | seed | perf | Δ Elo | Elo new | Elo rank | Δ SRM | SRM new | SRM rank |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 2009-04-19 | SRM 438 | 2 | 729 | 554.99 | -0.45 | -56 | 1558 | 9334 | -160 | 539 | 11901 |
| 3 | 2009-02-28 | TCO09 Qual 2 | 1 | 1215 | 1,232.24 | -0.12 | -20 | 1615 | 7776 | -137 | 699 | 10713 |
| 2 | 2008-12-20 | SRM 430 | 2 | 484 | 496.79 | -0.30 | -41 | 1635 | 7791 | -162 | 836 | 9152 |
| 1 | 2008-12-11 | SRM 429 | 2 | 518 | 587.48 | 0.18 | 88 | 1675 | 7375 | -202 | 998 | 6559 |