Ushakov Sergei

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 5, 2026 (latest changes Sept. 4, 2026).

217 place (281.90).

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

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 = 253.72744970798183

score = 310.0666137985726 * 0.5 + 253.72744970798183 * 0.5 = 281.8970317532772

Rating changes

Show

all results
Date Place Points Reason
2026-09-02 218 -> 217 281.90
2026-09-01 220 -> 218 281.90
2026-08-31 223 -> 220 281.49 -> 281.90
2026-08-30 221 -> 223 281.49
2026-08-26 222 -> 221 281.49
2026-08-16 214 -> 222 281.49
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

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