Dergunov Aleksey
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Sept. 7, 2026 (latest changes Sept. 7, 2026).
3 place (786.53).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (573.03 * 3.75 * 0.14 + 826.09 * 2.80 * 0.29 + 380.95 * 2.60 * 0.43 + 411.76 * 3.05 * 0.43 + 542.37 * 3.25 * 0.43 + 985.71 * 3.50 * 0.57 + 733.33 * 2 * 0.71 + 552.24 * 4.10 * 0.71 + 833.33 * 2.45 * 0.86 + 744.19 * 3 * 0.86 + 964.91 * 3.90 * 1 + 645.16 * 3 * 1 + 927.27 * 3 * 1 + 635.14 * 3.40 * 1 + 760 * 3.10 * 1 + 880.95 * 2.90 * 1 + 915.25 * 3.40 * 1) / (3.75 * 0.14 + 2.80 * 0.29 + 2.60 * 0.43 + 3.05 * 0.43 + 3.25 * 0.43 + 3.50 * 0.57 + 2 * 0.71 + 4.10 * 0.71 + 2.45 * 0.86 + 3 * 0.86 + 3.90 * 1 + 3 * 1 + 3 * 1 + 3.40 * 1 + 3.10 * 1 + 2.90 * 1 + 3.40 * 1) = 762.5885124759832
p2 = (964.91 * 3.90 * 1 + 915.25 * 3.40 * 1 + 601.40 * 4.71 * 1 + 927.27 * 3 * 1) / max_coefficients = 810.4756651524984
score = 762.5885124759832 * 0.5 + 810.4756651524984 * 0.5 = 786.5320888142408
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-03 | 3 | 787.95 -> 786.53 |
Riichi over The Volga 2025: 71% -> 57% |
| 2026-09-01 | 2 -> 3 | 795.70 -> 787.95 |
SPB Riichi Open 2024: 14% -> 0% |
| 2026-08-31 | 3 -> 2 | 794.39 -> 795.70 |
SPB Riichi Open 2025: 100% -> 86% |
| 2026-08-16 | 9 -> 3 | 759.65 -> 794.39 |
Ufa Championship 2026: 0% -> 100% White Wolf Cup: 57% -> 43% |
| 2026-08-15 | 10 -> 9 | 755.33 -> 759.65 |
13 bloody tiles: 86% -> 71% |
| 2026-08-13 | 12 -> 10 | 754.16 -> 755.33 |
Moscow Riichi 2024: 29% -> 14% |
| 2026-08-08 | 12 | 754.13 -> 754.16 |
Random not fault: 86% -> 71% |
| 2026-08-04 | 9 -> 12 | 763.89 -> 754.13 |
Riichi over Volga: 14% -> 0% |
| 2026-08-03 | 9 | 763.79 -> 763.89 |
Two roosters and Chuckles: 100% -> 86% |
| 2026-08-02 | 9 | 761.69 -> 763.79 |
Agari Winter Tournament 2025: 57% -> 43% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 915 |
|
6/60 | 100% | 3.40 | RR | Ufa Championship 2026 | Ufa | |
| 2 | 601 |
|
58/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 3 | 881 |
|
6/43 | 100% | 2.90 | RR | Sturgeon in tempai | Saratov | |
| 4 | 760 |
|
13/51 | 100% | 3.10 | RR | Moscow Riichi 2026 | Moscow | |
| 5 | 635 |
|
28/75 | 100% | 3.40 | RR | White Wolf Cup 2026 | Saint Petersburg | |
| 6 | 927 |
|
5/56 | 100% | 3.00 | RR | Riichi On Ice 2026 | Samara | |
| 7 | 645 |
|
12/32 | 100% | 3.00 | RR | Final Cup 2025 | Moscow | |
| 8 | 965 |
|
🥉 | 3/58 | 100% | 3.90 | RR | XI Russian Championship | Moscow |
| 9 | 390 |
|
48/78 | 86% | 3.45 | RR | SPB Riichi Open 2025 | Saint Petersburg | |
| 10 | 744 |
|
12/44 | 86% | 3.00 | RR | Two roosters and Chuckles | Kirov | |
| 11 | 833 |
|
6/31 | 86% | 2.45 | RR | Agari Summer Tournament 2025 | Moscow | |
| 12 | 552 |
|
31/68 | 71% | 4.10 | RR | 13 bloody tiles | Perm | |
| 13 | 733 |
|
5/16 | 71% | 2.00 | RR | Random not fault | Moscow | |
| 14 | 986 |
|
🥈 | 2/71 | 57% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 15 | 542 |
|
28/60 | 43% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 16 | 412 |
|
31/52 | 43% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 17 | 381 |
|
27/43 | 43% | 2.60 | RR | Riichi On Ice | Samara | |
| 18 | 826 |
|
5/24 | 29% | 2.80 | CRR | Riichi never changing | Moscow | |
| 19 | 573 |
|
39/90 | 14% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 20 | 674 |
|
32/96 | 0% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 21 | 797 |
|
17/80 | 0% | 3.65 | RR | Riichi over Volga | Samara | |
| 22 | 745 |
|
13/48 | 0% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 23 | 176 |
|
43/52 | 0% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 24 | 1000 |
|
🥇 | 1/20 | 0% | 1.50 | CRR | Duplicate riichi mahjong tournament 2024 | Moscow |
| 25 | 548 |
|
15/32 | 0% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 26 | 748 |
|
28/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 27 | 261 |
|
35/47 | 0% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 28 | 961 |
|
🥉 | 3/52 | 0% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |
| 29 | 769 |
|
10/40 | 0% | 2.90 | CRR | Autumn Agari tournament | Moscow | |
| 30 | 864 |
|
4/23 | 0% | 2.10 | CRR | Mushroom League | Moscow | |
| 31 | 215 |
|
85/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 32 | 253 |
|
66/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm | |
| 33 | 486 |
|
58/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 34 | 606 |
|
27/67 | 0% | 3.45 | RR | Tenpai can't buy happiness | Perm | |
| 35 | 511 |
|
24/48 | 0% | 3.10 | RR | Agari team tournament | Moscow |