Datkov Sergey

From Yekaterinburg, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 6, 2025 (latest changes Sept. 5, 2025).

264 place (96.55).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (296.30 * 2.30 * 0.14 + 555.56 * 2.30 * 0.43 + 0 + 0 + 0) / (2.30 * 0.14 + 2.30 * 0.43 + 1 + 1 + 1) = 149.50688963830848

p2 = (555.56 * 2.30 * 0.43 + 296.30 * 2.30 * 0.14) / max_coefficients = 43.58378378378378

score = 149.50688963830848 * 0.5 + 43.58378378378378 * 0.5 = 96.54533671104613

Rating changes

Show

all results
Date Place Points Reason
2025-09-05 262 -> 264 105.03 -> 96.55

Finding Dora: 29% -> 14%
2025-09-03 272 -> 262 105.03
2025-09-01 272 104.37 -> 105.03
2025-08-31 265 -> 272 104.37
2025-08-26 248 -> 265 146.30 -> 104.37
2025-08-25 245 -> 248 164.73 -> 146.30

Chasing Kan: 57% -> 43%
2025-08-04 245 164.38 -> 164.73
2025-08-03 239 -> 245 164.38
2025-07-26 237 -> 239 164.38
2025-07-13 234 -> 237 164.38

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 556 2024-02-25 13/28 43% 2.30 CRR Chasing Kan Yekaterinburg
2 296 2023-11-05 20/28 14% 2.30 CRR Finding Dora Yekaterinburg
3 579 2023-08-27 9/20 0% 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