Borzonogov Vitaly
From Arkhangelsk, Russia
EMA: 15990253
Online rating
Rating date Oct. 31, 2025 (latest changes Oct. 31, 2025).
26 place (529.03).
how we calculated rating score
max_coefficients = (4.45 * 1 + 4.45 * 1 + 3.05 * 1) = 11.95
p1 = (414.63 * 2.40 * 0.43 + 684.21 * 1.90 * 0.43 + 642.86 * 1.50 * 0.86 + 492.96 * 3.05 * 1 + 170.73 * 2.40 * 1 + 239.44 * 4.45 * 1 + 606.06 * 2.20 * 1 + 851.35 * 4.45 * 1) / (2.40 * 0.43 + 1.90 * 0.43 + 1.50 * 0.86 + 3.05 * 1 + 2.40 * 1 + 4.45 * 1 + 2.20 * 1 + 4.45 * 1) = 503.63211260133465
p2 = (851.35 * 4.45 * 1 + 492.96 * 3.05 * 1 + 606.06 * 2.20 * 1) / max_coefficients = 554.4234309623432
score = 503.63211260133465 * 0.5 + 554.4234309623432 * 0.5 = 529.027771781839
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-31 | 45 -> 26 | 398.10 -> 529.03 |
Kawa-league, season 2: 0% -> 100% |
| 2025-10-28 | 45 | 400.57 -> 398.10 |
Wrong Chair: 57% -> 43% |
| 2025-10-25 | 41 -> 45 | 400.57 | |
| 2025-10-16 | 42 -> 41 | 395.85 -> 400.57 | |
| 2025-09-21 | 42 | 397.46 -> 395.85 |
IORMC Qualifiers 2024: 100% -> 86% |
| 2025-09-02 | 42 | 397.51 -> 397.46 |
Spring online tournament 2024: 57% -> 43% |
| 2025-08-28 | 42 | 399.78 -> 397.51 |
Wrong Chair: 71% -> 57% |
| 2025-08-16 | 43 -> 42 | 390.26 -> 399.78 | |
| 2025-07-05 | 43 | 358.08 -> 390.26 |
Summer online tournament 2025: 0% -> 100% |
| 2025-07-02 | 47 -> 43 | 363.40 -> 358.08 |
Double Tournament with Naga: 14% -> 0% Spring online tournament 2024: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 851 |
|
12/75 | 100% | 4.45 | ONLINE | Kawa-league, season 2 | Russia | |
| 2 | 606 |
|
14/34 | 100% | 2.20 | ONLINE | Summer online tournament 2025 | Russia | |
| 3 | 239 |
|
55/72 | 100% | 4.45 | ONLINE | Kawa-league, season 1 | Russia | |
| 4 | 171 |
|
35/42 | 100% | 2.40 | ONLINE | Spring online tournament 2025 | Russia | |
| 5 | 493 |
|
37/72 | 100% | 3.05 | ONLINE | Winter online tournament 2025 | Russia | |
| 6 | 643 |
|
6/15 | 86% | 1.50 | ONLINE | IORMC Qualifiers 2024 | Russia | |
| 7 | 684 |
|
7/20 | 43% | 1.90 | ONLINE | Wrong Chair | Russia | |
| 8 | 415 |
|
25/42 | 43% | 2.40 | ONLINE | Spring online tournament 2024 | Russia | |
| 9 | 731 |
|
19/68 | 0% | 3.00 | ONLINE | Double Tournament with Naga | Russia | |
| 10 | 764 |
|
14/56 | 0% | 2.80 | ONLINE | Summer Online Tournament | Russia | |
| 11 | 957 |
|
🥉 | 3/48 | 0% | 2.60 | ONLINE | Demons of autumn wind | Russia |
| 12 | 851 |
|
14/88 | 0% | 3.25 | ONLINE | Winter Team Fight | Russia | |
| 13 | 133 |
|
14/16 | 0% | 1.40 | ONLINE | 北斗 Tournament 3: STAR EATER | Russia | |
| 14 | 182 |
|
10/12 | 0% | 1.70 | ONLINE | IORMC Qualifiers 2021 | Russia | |
| 15 | 593 |
|
12/28 | 0% | 2.10 | ONLINE | Autumn Online Tournament | Russia | |
| 16 | 968 |
|
🥈 | 2/32 | 0% | 2.20 | ONLINE | I wish to have dora san... | Russia |
| 17 | 512 |
|
22/44 | 0% | 2.50 | ONLINE | Demons of spring wind | Russia | |
| 18 | 581 |
|
19/44 | 0% | 2.50 | ONLINE | Summer Online Tournament | Russia | |
| 19 | 977 |
|
🥈 | 2/44 | 0% | 2.50 | ONLINE | Fast and Expensive | Russia |
| 20 | 348 |
|
16/24 | 0% | 1.60 | ONLINE | NightJongers TAG Tournament | Russia | |
| 21 | 456 |
|
57/104 | 0% | 3.45 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 22 | 974 |
|
🥈 | 2/40 | 0% | 2.40 | ONLINE | Spring Online Tournament | Russia |
| 23 | 892 |
|
10/84 | 0% | 3.20 | ONLINE | No Dora Tournament | Russia | |
| 24 | 516 |
|
16/32 | 0% | 2.85 | ONLINE | 北斗 Tournament 2: RESURRECTION | Russia | |
| 25 | 15 |
|
67/68 | 0% | 3.00 | ONLINE | Winter Online Tournament | Russia | |
| 26 | 897 |
|
5/40 | 0% | 2.60 | ONLINE | Demons of winter wind | Russia | |
| 27 | 778 |
|
23/100 | 0% | 3.40 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 28 | 645 |
|
12/32 | 0% | 2.20 | ONLINE | 北斗 Tournament | Russia | |
| 29 | 737 |
|
6/20 | 0% | 1.90 | ONLINE | IORMC Qualifiers 2020 | Russia | |
| 30 | 36 |
|
54/56 | 0% | 2.80 | ONLINE | Autumn Online Tournament | Russia | |
| 31 | 373 |
|
33/52 | 0% | 2.70 | ONLINE | Rainy season tournament［梅雨］ | Russia | |
| 32 | 408 |
|
43/72 | 0% | 3.05 | ONLINE | Summer Tournament | Russia | |
| 33 | 941 |
|
9/136 | 0% | 3.69 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 34 | 822 |
|
20/108 | 0% | 3.50 | ONLINE | Spring tournament | Russia | |
| 35 | 81 |
|
114/124 | 0% | 3.06 | ONLINE | Be cool stay home | Russia | |
| 36 | 367 |
|
89/140 | 0% | 3.70 | ONLINE | Corona go away | Russia | |
| 37 | 979 |
|
4/144 | 0% | 3.71 | ONLINE | Riichi Online Open Team Cup 2020 | Russia | |
| 38 | 925 |
|
4/41 | 0% | 2.40 | ONLINE | Autumn Online Tournament | Russia | |
| 39 | 818 |
|
11/56 | 0% | 2.80 | ONLINE | Summer Online Tournament | Russia | |
| 40 | 120 |
|
74/84 | 0% | 3.20 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 41 | 175 |
|
53/64 | 0% | 2.95 | ONLINE | Winter Online Tournament | Russia | |
| 42 | 288 |
|
43/60 | 0% | 2.90 | ONLINE | Ryan Pin Online Tournament | Russia | |
| 43 | 462 |
|
22/40 | 0% | 2.40 | ONLINE | Autumn online tournament 2018 | Russia | |
| 44 | 102 |
|
54/60 | 0% | 2.90 | ONLINE | Summer online tournament 2018 | Russia | |
| 45 | 588 |
|
22/52 | 0% | 2.70 | ONLINE | Spring online tournament 2018 | Russia | |
| 46 | 364 |
|
8/12 | 0% | 1.10 | ONLINE | Winter riichi-blitz 2018 | Russia | |
| 47 | 1000 |
|
🥇 | 1/44 | 0% | 2.30 | ONLINE | Winter online tournament 2018 | Russia |
| 48 | 111 |
|
25/28 | 0% | 1.70 | ONLINE | IORMC Qualifiers 2017 | Russia | |
| 49 | 419 |
|
26/44 | 0% | 1.90 | ONLINE | Summer riichi-blitz 2017 | Russia | |
| 50 | 581 |
|
19/44 | 0% | 1.90 | ONLINE | Spring riichi-blitz 2017 | Russia | |
| 51 | 128 |
|
42/48 | 0% | 2.00 | ONLINE | Winter riichi-blitz 2017 | Russia |