Ermolaev Alexey
From Kirov, Russia
EMA: 15990340
Internal rating (RR)
Rating date July 19, 2025 (latest changes July 14, 2025).
7 place (741.46).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35
p1 = (616.82 * 4 * 0.14 + 897.20 * 4.60 * 0.71 + 747.37 * 3.85 * 1 + 193.55 * 3.10 * 1 + 971.43 * 3.50 * 1 + 671.64 * 4.10 * 1) / (4 * 0.14 + 4.60 * 0.71 + 3.85 * 1 + 3.10 * 1 + 3.50 * 1 + 4.10 * 1) = 702.5263780070818
p2 = (971.43 * 3.50 * 1 + 897.20 * 4.60 * 0.71 + 747.37 * 3.85 * 1 + 671.64 * 4.10 * 1) / max_coefficients = 780.3967426710097
score = 702.5263780070818 * 0.5 + 780.3967426710097 * 0.5 = 741.4615603390457
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-12 | 7 | 756.35 -> 741.46 |
X Russian Championship: 86% -> 71% |
| 2025-07-10 | 6 -> 7 | 756.35 | |
| 2025-07-03 | 8 -> 6 | 755.01 -> 756.35 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-15 | 14 -> 8 | 704.09 -> 755.01 |
13 bloody tiles: 0% -> 100% |
| 2025-06-11 | 20 -> 14 | 698.09 -> 704.09 |
Money can not buy tenpai: 14% -> 0% |
| 2025-06-08 | 18 -> 20 | 698.09 | |
| 2025-05-30 | 19 -> 18 | 698.09 | |
| 2025-05-12 | 15 -> 19 | 706.14 -> 698.09 |
X Russian Championship: 100% -> 86% |
| 2025-05-03 | 36 -> 15 | 594.00 -> 706.14 |
Riichi over The Volga 2025: 0% -> 100% SPB Riichi Open 2023: 43% -> 29% |
| 2025-04-11 | 39 -> 36 | 588.67 -> 594.00 |
Money can not buy tenpai: 29% -> 14% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 672 |
|
23/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm |
| 2 | 971 |
|
3/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 3 | 194 |
|
26/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow |
| 4 | 747 |
|
25/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 5 | 897 |
|
12/108 | 71% | 4.60 | RR | X Russian Championship | Perm |
| 6 | 617 |
|
42/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |
| 7 | 356 |
|
57/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |
| 8 | 507 |
|
38/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm |
| 9 | 909 |
|
6/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov |
| 10 | 205 |
|
32/40 | 0% | 2.90 | EMA | Big open chiitoitsu in a small tenpai | Kirov |
| 11 | 279 |
|
81/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow |
| 12 | 556 |
|
29/64 | 0% | 3.85 | EMA | Aki Shanten 2019 | Perm |
| 13 | 889 |
|
4/28 | 0% | 2.60 | RR | And yet the sinner collects tanyao | Kirov |
| 14 | 114 |
|
32/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 | Moscow |
| 15 | 843 |
|
14/84 | 0% | 4.20 | EMA | Haru Shanten 2019 | Perm |
| 16 | 130 |
|
21/24 | 0% | 2.50 | RR | Toi-Toi-man Tournament | Kirov |
| 17 | 648 |
|
33/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" | Perm |
| 18 | 304 |
|
17/24 | 0% | 1.40 | RR | Seven ryanmens | Kirov |
| 19 | 155 |
|
61/72 | 0% | 3.85 | EMA | Haru Shanten 2018 | Perm |
| 20 | 733 |
|
5/16 | 0% | 1.20 | RR | Yakuman in discard | Kirov |
| 21 | 28 |
|
70/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten | Perm |
| 22 | 667 |
|
6/16 | 0% | 1.20 | RR | Crouching Peacock, Hidden Dragon 2017 | Kirov |
| 23 | 933 |
|
2/16 | 0% | 1.00 | RR | Third riichi mahjong tournament, Kirov 2017 | Kirov |