Yamamoto, Yoshifumi
Current rating: 1484
Record: 3-4
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 206 | Hattyou, Yuuki (1500) | Lost 1-2 | -181480 |
| 2standard | 265 | Watanabe, Keita (1590) | Lost 1-2 | -161464 |
| 3standard | 414 | Sato, Hitoshi (1591) | Won 2-0 | +201484 |
| average opponent: 1560record: 1-2 | new rating: 1484 | |||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 20 | Okabayashi, Yuma (1464) | Won 2-1 | +171517 |
| 2sealed | 1 | Nishimura, Sho (1393) | Lost 0-2 | -201497 |
| 3sealed | 161 | Kobayashi, Hiromasa (1500) | Won 2-0 | +181515 |
| 4sealed | 173 | Tanaka, Toshifumi (1551) | Lost 1-2 | -171498 |
| average opponent: 1477record: 2-2 | new rating: 1498 | |||