Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Sept. 3, 2026 (latest changes Sept. 3, 2026).
327 place (115.15).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (171.43 * 2.50 * 1 + 322.58 * 2.40 * 1 + 0 + 0 + 0) / (2.50 * 1 + 2.40 * 1 + 1 + 1 + 1) = 152.24810126582278
p2 = (322.58 * 2.40 * 1 + 171.43 * 2.50 * 1) / max_coefficients = 78.05061648280338
score = 152.24810126582278 * 0.5 + 78.05061648280338 * 0.5 = 115.14935887431308
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-01 | 332 -> 327 | 115.15 | |
| 2026-08-31 | 332 | 115.02 -> 115.15 | |
| 2026-08-30 | 330 -> 332 | 115.02 | |
| 2026-08-29 | 331 -> 330 | 115.02 | |
| 2026-08-16 | 326 -> 331 | 115.02 | |
| 2026-08-15 | 326 | 114.74 -> 115.02 | |
| 2026-08-14 | 327 -> 326 | 114.74 | |
| 2026-08-13 | 328 -> 327 | 114.74 | |
| 2026-08-04 | 332 -> 328 | 114.74 | |
| 2026-08-02 | 321 -> 332 | 114.74 |