Ushakov Sergei

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Aug. 16, 2026 (latest changes Aug. 16, 2026).

215 place (281.49).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 15.459999999999999

p1 = (600 * 3 * 1 + 261.90 * 2.90 * 1 + 286.71 * 4.71 * 1 + 0 + 0) / (3 * 1 + 2.90 * 1 + 4.71 * 1 + 1 + 1) = 310.0666137985726

p2 = (600 * 3 * 1 + 286.71 * 4.71 * 1 + 261.90 * 2.90 * 1) / max_coefficients = 252.90685640362227

score = 310.0666137985726 * 0.5 + 252.90685640362227 * 0.5 = 281.48673510109745

Rating changes

Show

all results
Date Place Points Reason
2026-08-16 214 -> 215 281.49
2026-08-15 213 -> 214 280.56 -> 281.49
2026-08-14 214 -> 213 280.56
2026-08-13 215 -> 214 280.56
2026-08-04 217 -> 215 280.56
2026-08-02 214 -> 217 280.56
2026-08-01 215 -> 214 280.56
2026-07-25 214 -> 215 280.56
2026-07-18 213 -> 214 280.56
2026-07-15 214 -> 213 280.56

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 287 2026-06-14 103/144 100% 4.71 RR XII Russian Championship Samara
2 262 2026-05-03 32/43 100% 2.90 RR Sturgeon in tempai Saratov
3 600 2026-01-25 23/56 100% 3.00 RR Riichi On Ice 2026 Samara