Medvedev Sergei

From Moscow, Russia

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Internal rating (RR)

Rating date Sept. 10, 2026 (latest changes Sept. 7, 2026).

102 place (430.37).

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

p1 = (370.79 * 3.75 * 0.14 + 516.13 * 3.10 * 0.29 + 766.67 * 3 * 1 + 489.51 * 4.71 * 1 + 0) / (3.75 * 0.14 + 3.10 * 0.29 + 3 * 1 + 4.71 * 1 + 1) = 519.3097400248432

p2 = (489.51 * 4.71 * 1 + 766.67 * 3 * 1 + 516.13 * 3.10 * 0.29 + 370.79 * 3.75 * 0.14) / max_coefficients = 341.42829331602854

score = 519.3097400248432 * 0.5 + 341.42829331602854 * 0.5 = 430.3690166704359

Rating changes

Show

all results
Date Place Points Reason
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
2026-08-13 94 -> 95 438.64 -> 435.84

Moscow Riichi 2024: 29% -> 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 14% 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