Yamaguchi, Kazuhiro
Current rating: 1518
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Tokai, Tsukasa (1521) | Draw 1-1 | 01500 |
| 2sealed | 174 | Murakami, Taku (1501) | Won 2-0 | +181518 |
| 3sealed | 114 | Chiba, Katsutoshi (1501) | Draw 1-1 | 01518 |
| 4sealed | 178 | Ueda, Ai (1518) | Won 2-0 | +181536 |
| 5sealed | 115 | Suzuki, Ryuuichi (1535) | Lost 0-2 | -181518 |
| top | average opponent: 1515record: 2-1-2 | new rating: 1518 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 117 | Matsui, Masanobu (1500) | Won 2-1 | +181536 |
| 2sealed | 7 | Kurihara, Tomo (1573) | Lost 1-2 | -181518 |
| 3sealed | 267 | Yamazaki, Hiroyuki(Fukushima (1500) | Lost 1-2 | -181500 |
| top | average opponent: 1525record: 1-2 | new rating: 1500 | ||
| Grand Prix Sapporo 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 19 | Fujii, Yuya (1500) | Won 2-0 | +181518 |
| 2sealed | 33 | Nowaki, Kazumi (1518) | Lost 0-2 | -181500 |
| 3sealed | 85 | Nara, Nobuaki (1500) | Won 2-0 | +181518 |
| 4sealed | 45 | Abe, Natsuki (1518) | Won 2-1 | +181536 |
| 5sealed | 31 | Tajiri, Satoshi (1540) | Lost 0-2 | -181518 |
| 6sealed | 54 | Abe, Takaaki (1517) | Won 2-1 | +181536 |
| 7sealed | 27 | Sasaki, Takashi (1536) | Lost 0-2 | -181518 |
| top | average opponent: 1518record: 4-3 | new rating: 1518 | ||