Erentsov Oleg
From Serpukhov, Russia
EMA: 15990062
Internal rating (RR)
Rating date June 26, 2026 (latest changes June 26, 2026).
90 place (450.95).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (463.16 * 3.85 * 0.29 + 253.73 * 4.10 * 0.86 + 958.04 * 4.71 * 1 + 0 + 0) / (3.85 * 0.29 + 4.10 * 0.86 + 4.71 * 1 + 1 + 1) = 522.2042810636297
p2 = (958.04 * 4.71 * 1 + 253.73 * 4.10 * 0.86 + 463.16 * 3.85 * 0.29) / max_coefficients = 379.69874362002076
score = 522.2042810636297 * 0.5 + 379.69874362002076 * 0.5 = 450.9515123418252
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-06-26 | 91 -> 90 | 450.95 | |
| 2026-06-15 | 93 -> 91 | 442.06 -> 450.95 |
13 bloody tiles: 100% -> 86% |
| 2026-06-14 | 204 -> 93 | 146.68 -> 442.06 |
XII Russian Championship: 0% -> 100% |
| 2026-06-13 | 206 -> 204 | 146.68 | |
| 2026-06-09 | 207 -> 206 | 146.68 | |
| 2026-06-04 | 208 -> 207 | 146.68 | |
| 2026-05-17 | 207 -> 208 | 146.68 | |
| 2026-05-12 | 217 -> 207 | 146.68 | |
| 2026-05-07 | 218 -> 217 | 146.68 | |
| 2026-05-03 | 213 -> 218 | 146.33 -> 146.68 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 958 |
|
7/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 2 | 254 |
|
51/68 | 86% | 4.10 | RR | 13 bloody tiles | Perm | |
| 3 | 463 |
|
52/96 | 29% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg | |
| 4 | 613 |
|
44/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow | |
| 5 | 252 |
|
84/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship | Moscow | |
| 6 | 937 |
|
5/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 | Saint Petersburg | |
| 7 | 651 |
|
23/64 | 0% | 3.45 | EMA | White Dragon Tournament | Moscow | |
| 8 | 651 |
|
23/64 | 0% | 3.45 | EMA | Moscow Riichi Open 2017 | Moscow | |
| 9 | 402 |
|
53/88 | 0% | 3.45 | EMA | V Russian Riichi Championship 2016 | Moscow | |
| 10 | 636 |
|
37/100 | 0% | 3.40 | RR | "Japanese House" riichi mahjong cup 2016 | Moscow | |
| 11 | 209 |
|
35/44 | 0% | 2.50 | EMA | Moscow Riichi Championship 2015 | Moscow | |
| 12 | 810 |
|
13/64 | 0% | 3.15 | EMA | Russian Open Riichi Championship 2014 | Moscow | |
| 13 | 127 |
|
56/64 | 0% | 3.15 | RR | "Japanese House" riichi mahjong cup 2014 | Moscow | |
| 14 | 627 |
|
29/76 | 0% | 2.50 | RR | Moscow Riichi 2014 | Moscow | |
| 15 | 873 |
|
10/72 | 0% | 3.25 | EMA | Russian Riichi Championship 2013 | Moscow | |
| 16 | 200 |
|
45/56 | 0% | 3.00 | RR | "Japanese House" riichi mahjong cup 2013 | Moscow | |
| 17 | 947 |
|
🥈 | 2/20 | 0% | 1.30 | EMA | Russian Open Riichi Championship 2012 | Moscow |
| 18 | 286 |
|
26/36 | 0% | 0.90 | EMA | Moscow Riichi 2011 | Moscow |