Ermolaev Andrei

Winner Yoroshiku League 2

From Sarov, Russia

EMA: 15990413

Player page

Common russian riichi rating (CRR)

Rating date Feb. 8, 2026 (latest changes Feb. 8, 2026).

171 place (304.73).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (663.55 * 4.60 * 0.29 + 478.26 * 2.80 * 0.71 + 492.54 * 4.10 * 1 + 32.26 * 3 * 1 + 0) / (4.60 * 0.29 + 2.80 * 0.71 + 4.10 * 1 + 3 * 1 + 1) = 345.59927669424036

p2 = (492.54 * 4.10 * 1 + 478.26 * 2.80 * 0.71 + 663.55 * 4.60 * 0.29 + 32.26 * 3 * 1) / max_coefficients = 263.8635451505017

score = 345.59927669424036 * 0.5 + 263.8635451505017 * 0.5 = 304.731410922371

Rating changes

Show

all results
Date Place Points Reason
2026-02-08 166 -> 171 304.73
2026-02-04 167 -> 166 304.73
2026-02-02 169 -> 167 304.73
2026-02-01 168 -> 169 313.37 -> 304.73

Riichi never changing: 86% -> 71%
2026-01-25 167 -> 168 313.37
2026-01-12 153 -> 167 336.22 -> 313.37

X Russian Championship: 43% -> 29%
2026-01-07 148 -> 153 336.22
2026-01-03 147 -> 148 336.22
2026-01-01 150 -> 147 336.22
2025-12-27 146 -> 150 336.22

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 32 2025-11-30 31/32 100% 3.00 RR Final Cup 2025 Moscow
2 493 2025-06-15 35/68 100% 4.10 RR 13 bloody tiles Perm
3 478 2024-12-01 13/24 71% 2.80 CRR Riichi never changing Moscow
4 664 2024-05-12 37/108 29% 4.60 RR X Russian Championship Perm
5 870 2022-12-18 4/24 0% 2.80 CRR Meeting in the billiard room Moscow
6 667 2022-11-06 26/76 0% 4.20 RR IX Russian Riichi Championship Perm
7 164 2021-11-06 47/56 0% 3.30 RR Kirov Tournament Kirov
8 128 2020-03-08 35/40 0% 2.90 EMA Big open chiitoitsu in a small tenpai Kirov
9 852 2019-09-08 5/28 0% 2.60 RR And yet the sinner collects tanyao Kirov
10 590 2019-05-04 35/84 0% 4.20 EMA Haru Shanten 2019 Perm
11 383 2019-01-13 30/48 0% 3.10 RR Agari team tournament 2019 Moscow