Medvedev Sergei
From Moscow, Russia
Internal rating (RR)
Rating date April 20, 2026 (latest changes April 19, 2026).
117 place (364.00).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (370.79 * 3.75 * 0.43 + 516.13 * 3.10 * 0.71 + 766.67 * 3 * 1 + 0 + 0) / (3.75 * 0.43 + 3.10 * 0.71 + 3 * 1 + 1 + 1) = 457.83521772743654
p2 = (766.67 * 3 * 1 + 516.13 * 3.10 * 0.71 + 370.79 * 3.75 * 0.43) / max_coefficients = 270.1558528428094
score = 457.83521772743654 * 0.5 + 270.1558528428094 * 0.5 = 363.99553528512297
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-04-19 | 116 -> 117 | 364.00 | |
| 2026-04-16 | 117 -> 116 | 364.00 | |
| 2026-04-13 | 114 -> 117 | 368.14 -> 364.00 |
Moscow Riichi 2024: 57% -> 43% |
| 2026-04-11 | 113 -> 114 | 368.14 | |
| 2026-04-04 | 115 -> 113 | 368.14 | |
| 2026-03-26 | 116 -> 115 | 368.14 | |
| 2026-03-14 | 115 -> 116 | 368.14 | |
| 2026-03-12 | 119 -> 115 | 368.14 | |
| 2026-03-07 | 116 -> 119 | 377.22 -> 368.14 |
Moscow Open Riichi Marathon: 86% -> 71% |
| 2026-03-01 | 118 -> 116 | 377.22 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 767 |
|
8/31 | 100% | 3.00 | RR | Moscow Open Riichi Marathon 2026 | Moscow | |
| 2 | 516 |
|
16/32 | 71% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 3 | 371 |
|
57/90 | 43% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 736 |
|
24/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 5 | 587 |
|
32/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 6 | 360 |
|
72/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |