Medvedev Sergei

From Moscow, Russia

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Internal rating (RR)

Rating date Oct. 21, 2026 (latest changes Oct. 16, 2026).

108 place (403.17).

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

p1 = (516.13 * 3.10 * 0.29 + 766.67 * 3 * 1 + 489.51 * 4.71 * 1 + 0 + 0) / (3.10 * 0.29 + 3 * 1 + 4.71 * 1 + 1 + 1) = 477.80933154769826

p2 = (489.51 * 4.71 * 1 + 766.67 * 3 * 1 + 516.13 * 3.10 * 0.29) / max_coefficients = 328.53406878650225

score = 477.80933154769826 * 0.5 + 328.53406878650225 * 0.5 = 403.17170016710025

Rating changes

Show

all results
Date Place Points Reason
2026-10-13 102 -> 108 430.37 -> 403.17

Moscow Riichi 2024: 14% -> 0%
2026-09-07 100 -> 102 437.72 -> 430.37

Moscow Open Riichi Marathon: 43% -> 29%
2026-09-06 93 -> 100 437.72
2026-09-03 94 -> 93 437.72
2026-09-02 95 -> 94 437.72
2026-09-01 97 -> 95 437.72
2026-08-31 96 -> 97 437.14 -> 437.72
2026-08-26 97 -> 96 437.14
2026-08-16 94 -> 97 437.14
2026-08-15 95 -> 94 435.84 -> 437.14

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 490 2026-06-14 74/144 100% 4.71 RR XII Russian Championship Samara
2 767 2026-01-07 8/31 100% 3.00 RR Moscow Open Riichi Marathon 2026 Moscow
3 516 2025-01-07 16/32 29% 3.10 RR Moscow Open Riichi Marathon Moscow
4 371 2024-10-13 57/90 0% 3.75 RR Moscow Riichi 2024 Moscow
5 736 2023-06-11 24/88 0% 3.75 RR Money can not buy tenpai Perm
6 587 2022-11-06 32/76 0% 4.20 RR IX Russian Riichi Championship Perm
7 360 2022-06-12 72/112 0% 4.05 RR Moscow Riichi 2022 Moscow