Koseki, Kouta9098
Current rating: 1508
Record: 3-3-1
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 553 | Matsuda, Masashi (1588) | Lost 1-2 | -161484 |
| 4legacy | 639 | Ibata, Chiharu (1468) | Draw 1-1 | -11483 |
| 5legacy | 551 | Jackel, Stephen (1572) | Won 2-0 | +201503 |
| 6legacy | 361 | Kariya, Kazuki (1698) | Lost 1-2 | -151488 |
| 7legacy | 553 | Arahori, Kazuaki (1558) | Won 2-0 | +201508 |
| 8legacy | 380 | Prantilla, Paul (1500) | Won 2-1 | +181526 |
| 9legacy | 259 | Aridome, Tomohito (1555) | Lost 1-2 | -181508 |
| average opponent: 1563record: 3-3-1 | new rating: 1508 | |||