Datkov Sergey

From Yekaterinburg, Russia

Player page

Common russian riichi rating (CRR)

Rating date July 10, 2025 (latest changes July 10, 2025).

233 place (163.71).

max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266

p1 = (578.95 * 2.10 * 0.14 + 296.30 * 2.30 * 0.29 + 555.56 * 2.30 * 0.57 + 0 + 0) / (2.10 * 0.14 + 2.30 * 0.29 + 2.30 * 0.57 + 1 + 1) = 257.1884759634969

p2 = (555.56 * 2.30 * 0.57 + 296.30 * 2.30 * 0.29 + 578.95 * 2.10 * 0.14) / max_coefficients = 70.22846497974129

score = 257.1884759634969 * 0.5 + 70.22846497974129 * 0.5 = 163.70847047161908

Rating changes

Show

all results
Date Place Points Reason
2025-07-05 231 -> 233 168.22 -> 163.71

Finding Dora: 43% -> 29%
2025-07-03 232 -> 231 168.22
2025-06-27 226 -> 232 183.53 -> 168.22

13 tiles until tempai: 29% -> 14%
2025-06-25 217 -> 226 198.04 -> 183.53

Chasing Kan: 71% -> 57%
2025-06-22 218 -> 217 198.04
2025-06-15 210 -> 218 199.51 -> 198.04
2025-06-14 204 -> 210 199.51
2025-06-11 210 -> 204 199.51
2025-06-09 211 -> 210 199.51
2025-05-17 209 -> 211 199.51

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 556 2024-02-25 13/28 57% 2.30 CRR Chasing Kan Yekaterinburg
2 296 2023-11-05 20/28 29% 2.30 CRR Finding Dora Yekaterinburg
3 579 2023-08-27 9/20 14% 2.10 CRR 13 tiles until tempai Yekaterinburg
4 737 2019-03-17 6/20 0% 2.10 RR Spring hope Yekaterinburg
5 852 2017-06-11 5/28 0% 2.10 RR Tyumen Mahjong Tournament (TMT) 2017 Tyumen
6 581 2017-04-16 14/32 0% 2.20 RR Second riichi mahjong tournament, Chelyabinsk 2017 Chelyabinsk
7 783 2017-01-29 6/24 0% 2.20 RR The first tournament of 2017 Yekaterinburg
8 957 2015-12-05 2/24 0% 1.80 RR 4 riichi mahjong tournament 2015 Yekaterinburg
9 158 2015-09-27 17/20 0% 1.70 RR Plitochka Tyumen
10 400 2015-08-29 10/16 0% 1.60 RR 3 riichi mahjong tournament 2015 Yekaterinburg
11 1000 2015-02-22 1/28 0% 1.90 RR 2 winter riichi mahjong tournament 2015 Yekaterinburg
12 526 2014-10-25 10/20 0% 1.30 RR Autumn riichi mahjong tournament 2014 Yekaterinburg
13 842 2014-06-08 4/20 0% 1.30 RR Chelyabinsk riichi mahjong championship 2017 Chelyabinsk