Dergunov Aleksey
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date July 18, 2025 (latest changes July 14, 2025).
10 place (727.73).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35
p1 = (214.95 * 4 * 0.14 + 863.64 * 2.10 * 0.29 + 769.23 * 2.90 * 0.43 + 960.78 * 3.05 * 0.57 + 542.37 * 3.25 * 1 + 260.87 * 2.10 * 0.71 + 747.66 * 4.60 * 0.71 + 548.39 * 1.80 * 0.86 + 1000 * 1.50 * 0.86 + 744.68 * 2.80 * 0.86 + 552.24 * 4.10 * 1 + 797.47 * 3.65 * 1 + 673.68 * 3.85 * 1 + 573.03 * 3.75 * 1 + 826.09 * 2.80 * 1 + 985.71 * 3.50 * 1 + 733.33 * 2 * 1 + 833.33 * 2.45 * 1) / (4 * 0.14 + 2.10 * 0.29 + 2.90 * 0.43 + 3.05 * 0.57 + 3.25 * 1 + 2.10 * 0.71 + 4.60 * 0.71 + 1.80 * 0.86 + 1.50 * 0.86 + 2.80 * 0.86 + 4.10 * 1 + 3.65 * 1 + 3.85 * 1 + 3.75 * 1 + 2.80 * 1 + 3.50 * 1 + 2 * 1 + 2.45 * 1) = 712.0625715165413
p2 = (985.71 * 3.50 * 1 + 797.47 * 3.65 * 1 + 673.68 * 3.85 * 1 + 747.66 * 4.60 * 0.71) / max_coefficients = 743.3941368078176
score = 712.0625715165413 * 0.5 + 743.3941368078176 * 0.5 = 727.7283541621795
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-14 | 9 -> 10 | 727.88 -> 727.73 |
Guardian of the Winds: 100% -> 86% |
| 2025-07-13 | 12 -> 9 | 724.30 -> 727.88 |
Agari Summer Tournament 2025: 0% -> 100% |
| 2025-07-12 | 11 -> 12 | 733.38 -> 724.30 |
X Russian Championship: 86% -> 71% |
| 2025-07-10 | 9 -> 11 | 734.68 -> 733.38 |
Agari Spring Tournament 2024: 71% -> 57% |
| 2025-07-03 | 14 -> 9 | 731.42 -> 734.68 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-22 | 12 -> 14 | 731.97 -> 731.42 |
Mushroom League: 43% -> 29% |
| 2025-06-15 | 9 -> 12 | 740.63 -> 731.97 |
13 bloody tiles: 0% -> 100% |
| 2025-06-11 | 7 -> 9 | 747.97 -> 740.63 |
Money can not buy tenpai: 14% -> 0% |
| 2025-06-08 | 11 -> 7 | 736.81 -> 747.97 |
Random not fault: 0% -> 100% |
| 2025-05-30 | 11 | 735.23 -> 736.81 |
Seihoku spring tournament 2024: 86% -> 71% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 833 |
|
6/31 | 100% | 2.45 | RR | Agari Summer Tournament 2025 | Moscow |
| 2 | 552 |
|
31/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm |
| 3 | 733 |
|
5/16 | 100% | 2.00 | RR | Random not fault | Moscow |
| 4 | 986 |
|
2/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 5 | 542 |
|
28/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg |
| 6 | 412 |
|
31/52 | 100% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow |
| 7 | 381 |
|
27/43 | 100% | 2.60 | RR | Riichi On Ice | Samara |
| 8 | 826 |
|
5/24 | 100% | 2.80 | CRR | Riichi never changing | Moscow |
| 9 | 573 |
|
39/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow |
| 10 | 674 |
|
32/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 11 | 797 |
|
17/80 | 100% | 3.65 | RR | Riichi over Volga | Samara |
| 12 | 745 |
|
13/48 | 86% | 2.80 | RR | Guardian of the Winds | Yekaterinburg |
| 13 | 176 |
|
43/52 | 86% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow |
| 14 | 1000 |
|
1/20 | 86% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow |
| 15 | 548 |
|
15/32 | 86% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov |
| 16 | 748 |
|
28/108 | 71% | 4.60 | RR | X Russian Championship | Perm |
| 17 | 261 |
|
35/47 | 71% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 18 | 961 |
|
3/52 | 57% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |
| 19 | 769 |
|
10/40 | 43% | 2.90 | CRR | Autumn Agari tournament | Moscow |
| 20 | 864 |
|
4/23 | 29% | 2.10 | CRR | Mushroom League | Moscow |
| 21 | 215 |
|
85/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |
| 22 | 253 |
|
66/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |
| 23 | 486 |
|
58/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |
| 24 | 612 |
|
27/68 | 0% | 3.50 | RR | Tenpai can't buy happiness | Perm |
| 25 | 511 |
|
24/48 | 0% | 3.10 | RR | Agari team tournament | Moscow |