Koshida, Takafumi
Current rating: 1483
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2025 | Jones, Eric (1527) | Won 2-0 | +181540 |
| 2sealed | 2216 | Tachibana, Emu (1464) | Lost 0-2 | -191521 |
| 3sealed | 2317 | Taniguchi, Reo (1503) | Lost 1-2 | -181503 |
| 4sealed | 2359 | Kumegawa, Nobuo (1432) | Lost 0-2 | -201483 |
| top | average opponent: 1481record: 1-3 | new rating: 1483 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 88 | Kobayashi, Ryou (1552) | Draw 1-1 | +11501 |
| 5sealed | 64 | Suzuki, Masatsuna (1758) | Lost 1-2 | -141487 |
| 6sealed | 149 | Wakita, Koichi (1484) | Lost 1-2 | -181469 |
| 7sealed | 219 | Yamamoto, Takashi (1363) | Won 2-0 | +161485 |
| 8sealed | 289 | Tsuchiya, Hiroki (1471) | Won 2-0 | +181503 |
| 9sealed | 290 | Hamamoto, Yohei (1564) | Won 2-0 | +191522 |
| top | average opponent: 1532record: 3-2-1 | new rating: 1522 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 51 | Nagano, Munehisa (1391) | Lost 0-2 | -201480 |
| 2sealed | 266 | Honda, Kazuyuki (1484) | Won 2-0 | +181498 |
| 3sealed | 218 | Iwata, Jun (1500) | Won 2-1 | +181516 |
| 4sealed | 161 | Ishikawa, Masayo (1519) | Won 2-0 | +181534 |
| 5sealed | 57 | Takahashi, Kenji (1631) | Lost 0-2 | -161518 |
| 6sealed | 117 | Koyama, Takuma (1518) | Lost 1-2 | -181500 |
| top | average opponent: 1507record: 3-3 | new rating: 1500 | ||