Yamaguchi, Yoshinori
Current rating: 1515
Record: 8-8-3
| Grand Prix Yamagata 2006 (TSP limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 22 | Ooshima, Kunihiro (1485) | Lost 0-2 | -191479 |
| 2sealed | 140 | Hosono, Yasutaka (1481) | Won 2-1 | +181497 |
| 3sealed | 68 | Matsuki, Hitoshi (1515) | Draw 1-1 | +11498 |
| 4sealed | 117 | Yokoyama, Kenichi (1500) | Draw 1-1 | 01498 |
| 5sealed | 126 | Maekawa, Takuya (1462) | Won 2-1 | +171515 |
| top | average opponent: 1489record: 2-1-2 | new rating: 1515 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 147 | Imai, Takashi (1542) | Won 2-0 | +191489 |
| 2sealed | 54 | Minato, Junichi (1518) | Won 2-0 | +191508 |
| 3sealed | 52 | Tominaga, Yoichi (1503) | Won 2-0 | +181526 |
| 4sealed | 47 | Maki, Koichiro (1802) | Lost 0-2 | -131513 |
| 5sealed | 70 | Chijimi, Keiichi (1605) | Lost 0-2 | -161497 |
| 6sealed | 105 | Kikuchi, Yuuji (1554) | Draw 1-1 | +11498 |
| top | average opponent: 1587record: 3-2-1 | new rating: 1498 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 186 | Ueno, Mitsuru (Tokyo) (1517) | Lost 1-2 | -171465 |
| 2sealed | 215 | Satou, Kenichi (1482) | Won 2-0 | +181483 |
| 3sealed | 180 | Kawashima, Yoshiyuki (1656) | Lost 0-2 | -151468 |
| 4sealed | 262 | Hiraga, Mikio (1481) | Won 2-0 | +181486 |
| 5sealed | 166 | Yokoi, Masaki (1589) | Lost 1-2 | -161470 |
| top | average opponent: 1545record: 2-3 | new rating: 1470 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 192 | Kadoi, Manabu (1500) | Lost 0-2 | -181482 |
| 2sealed | 273 | Sasaki, Chuya (1482) | Won 2-0 | +181500 |
| 3sealed | 235 | Takarabe, Kenichiro (1500) | Lost 0-2 | -181482 |
| top | average opponent: 1494record: 1-2 | new rating: 1482 | ||