Kojima, Tatsuhiro
Current rating: 1551
Record: 7-4
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 307 | Kyan, Morihito (1500) | Won 2-1 | +181517 |
| 2standard | 136 | Matsumura, Hideyuki (1423) | Won 2-0 | +161533 |
| 3standard | 20 | Yoshikawa, Yuta (1552) | Lost 0-2 | -181515 |
| 4standard | 149 | Nakagawa, Shinichi (1518) | Lost 1-2 | -181497 |
| 5standard | 295 | Kobayashi, Jun (1323) | Won 2-0 | +151512 |
| 6standard | 159 | Ishikawa, Masami (1514) | Won 2-0 | +181530 |
| 7standard | 108 | Hattori, Taiki (1585) | Won 2-0 | +191549 |
| 8standard | 77 | Fukushima, Masataka (1563) | Won 2-1 | +181567 |
| 9standard | 39 | Saitou, Keiichirou (1647) | Lost 0-2 | -161551 |
| average opponent: 1514record: 6-3 | new rating: 1551 | |||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 250 | Arai, Ryou (1500) | Lost 0-2 | -181482 |
| 2sealed | 225 | Tatsuhara, Satoshi (1404) | Won 2-1 | +171499 |
| average opponent: 1452record: 1-1 | new rating: 1499 | |||