Datkov Sergey

From Yekaterinburg, Russia

Player page

Common russian riichi rating (CRR)

Rating date May 9, 2025 (latest changes May 5, 2025).

210 place (197.39).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85

p1 = (578.95 * 2.10 * 0.29 + 296.30 * 2.30 * 0.43 + 555.56 * 2.30 * 0.71 + 0 + 0) / (2.10 * 0.29 + 2.30 * 0.43 + 2.30 * 0.71 + 1 + 1) = 296.8553964319594

p2 = (555.56 * 2.30 * 0.71 + 578.95 * 2.10 * 0.29 + 296.30 * 2.30 * 0.43) / max_coefficients = 97.92744479495269

score = 296.8553964319594 * 0.5 + 97.92744479495269 * 0.5 = 197.39142061345603

Rating changes

Show

all results
Date Place Points Reason
2025-05-05 208 -> 210 200.45 -> 197.39

Finding Dora: 57% -> 43%
2025-05-03 206 -> 208 200.45
2025-04-27 197 -> 206 213.15 -> 200.45

13 tiles until tempai: 43% -> 29%
2025-04-26 196 -> 197 213.15
2025-04-25 191 -> 196 225.39 -> 213.15

Chasing Kan: 86% -> 71%
2025-04-22 192 -> 191 225.39
2025-04-13 190 -> 192 225.39
2025-04-11 191 -> 190 225.39
2025-03-29 189 -> 191 225.39
2025-03-23 183 -> 189 225.39

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 556 2024-02-25 13/28 71% 2.30 CRR Chasing Kan Yekaterinburg
2 296 2023-11-05 20/28 43% 2.30 CRR Finding Dora Yekaterinburg
3 579 2023-08-27 9/20 29% 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