Medvedev Sergei
From Moscow, Russia
Internal rating (RR)
Rating date Feb. 16, 2025 (latest changes Feb. 16, 2025).
122 place (309.63).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (735.63 * 3.75 * 0.29 + 370.79 * 3.75 * 1 + 516.13 * 3.10 * 1 + 0 + 0) / (3.75 * 0.29 + 3.75 * 1 + 3.10 * 1 + 1 + 1) = 380.85346033185925
p2 = (516.13 * 3.10 * 1 + 370.79 * 3.75 * 1 + 735.63 * 3.75 * 0.29) / max_coefficients = 238.3968454258675
score = 380.85346033185925 * 0.5 + 238.3968454258675 * 0.5 = 309.6251528788634
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-16 | 115 -> 122 | 309.63 | |
| 2025-02-11 | 108 -> 115 | 331.15 -> 309.63 |
Money can not buy tenpai: 43% -> 29% |
| 2025-02-02 | 106 -> 108 | 331.15 | |
| 2025-01-26 | 103 -> 106 | 331.15 | |
| 2025-01-07 | 120 -> 103 | 235.09 -> 331.15 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 2025-01-03 | 122 -> 120 | 235.09 | |
| 2024-12-11 | 117 -> 122 | 260.39 -> 235.09 |
Money can not buy tenpai: 57% -> 43% |
| 2024-11-06 | 118 -> 117 | 300.08 -> 260.39 |
IX Russian Riichi Championship: 14% -> 0% |
| 2024-10-13 | 125 -> 118 | 229.98 -> 300.08 |
Moscow Riichi 2024: 0% -> 100% |
| 2024-10-11 | 119 -> 125 | 259.74 -> 229.98 |
Money can not buy tenpai: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 516 |
|
16/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 2 | 371 |
|
57/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 3 | 736 |
|
24/88 | 29% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 4 | 587 |
|
32/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 5 | 360 |
|
72/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |