Erentsov Oleg

From Serpukhov, Russia

EMA: 15990062

Player page

Internal rating (RR)

Rating date Sept. 4, 2026 (latest changes Sept. 3, 2026).

103 place (417.52).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (253.73 * 4.10 * 0.71 + 958.04 * 4.71 * 1 + 0 + 0 + 0) / (4.10 * 0.71 + 4.71 * 1 + 1 + 1 + 1) = 493.99875735879533

p2 = (958.04 * 4.71 * 1 + 253.73 * 4.10 * 0.71) / max_coefficients = 341.0428293316029

score = 493.99875735879533 * 0.5 + 341.0428293316029 * 0.5 = 417.5207933451991

Rating changes

Show

all results
Date Place Points Reason
2026-09-03 102 -> 103 417.52
2026-09-02 103 -> 102 417.52
2026-09-01 91 -> 103 449.20 -> 417.52

SPB Riichi Open 2024: 14% -> 0%
2026-08-31 91 448.62 -> 449.20
2026-08-16 89 -> 91 448.62
2026-08-15 91 -> 89 444.28 -> 448.62

13 bloody tiles: 86% -> 71%
2026-08-03 92 -> 91 444.28
2026-08-02 91 -> 92 444.28
2026-07-25 89 -> 91 444.28
2026-07-18 88 -> 89 444.28

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 958 2026-06-14 7/144 100% 4.71 RR XII Russian Championship Samara
2 254 2025-06-15 51/68 71% 4.10 RR 13 bloody tiles Perm
3 463 2024-09-01 52/96 0% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 613 2022-06-12 44/112 0% 4.05 RR Moscow Riichi 2022 Moscow
5 252 2019-12-15 84/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
6 937 2019-11-24 5/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
7 651 2018-12-16 23/64 0% 3.45 EMA White Dragon Tournament Moscow
8 651 2017-10-22 23/64 0% 3.45 EMA Moscow Riichi Open 2017 Moscow
9 402 2016-09-11 53/88 0% 3.45 EMA V Russian Riichi Championship 2016 Moscow
10 636 2016-03-13 37/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016 Moscow
11 209 2015-03-08 35/44 0% 2.50 EMA Moscow Riichi Championship 2015 Moscow
12 810 2014-12-07 13/64 0% 3.15 EMA Russian Open Riichi Championship 2014 Moscow
13 127 2014-09-21 56/64 0% 3.15 RR "Japanese House" riichi mahjong cup 2014 Moscow
14 627 2014-02-15 29/76 0% 2.50 RR Moscow Riichi 2014 Moscow
15 873 2013-12-08 10/72 0% 3.25 EMA Russian Riichi Championship 2013 Moscow
16 200 2013-05-19 45/56 0% 3.00 RR "Japanese House" riichi mahjong cup 2013 Moscow
17 947 2012-08-12 🥈 2/20 0% 1.30 EMA Russian Open Riichi Championship 2012 Moscow
18 286 2011-04-23 26/36 0% 0.90 EMA Moscow Riichi 2011 Moscow