Yoshioka, Kouji
Current rating: 1479
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 167 | Takayama, Kenta (1500) | Lost 0-2 | -181496 |
| 3block | 247 | Miyazawa, Kazuhiro (1499) | Won 2-0 | +181514 |
| 4block | 171 | Ootsuka, Koutarou (1537) | Lost 0-2 | -171497 |
| 5block | 209 | Atarashi, Kota (1496) | Lost 0-2 | -181479 |
| 6block | 296 | Handa, Takuya (1480) | Won 2-1 | +181497 |
| 7block | 180 | Noda, Yasumasa (1503) | Lost 0-2 | -181479 |
| top | average opponent: 1502record: 2-4 | new rating: 1479 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 120 | Sato, Akihisa (1500) | Lost 0-2 | -181500 |
| 2sealed | 284 | Yoshimura, Motoki (1451) | Won 2-0 | +171517 |
| 3sealed | 148 | Takakuwa, Minoru (1502) | Won 2-1 | +181535 |
| 4sealed | 155 | Matsumura, Takehiko (1498) | Lost 0-2 | -191516 |
| 5sealed | 190 | Tomihara, Shinsuke (1509) | Won 2-1 | +181534 |
| 6sealed | 120 | Fujiwara, Satoshi (1461) | Lost 1-2 | -201514 |
| top | average opponent: 1487record: 3-3 | new rating: 1514 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 74 | Nakai, Takahiro (1500) | Lost 0-2 | -181482 |
| 2block | 555 | Ochi, Takushi (1482) | Lost 0-2 | -181464 |
| 3block | 588 | Ishizuka, Hiroichi (1463) | Won 2-0 | +181482 |
| 4block | 449 | Sugioka, Yuta (1481) | Won 2-1 | +181500 |
| 5block | 361 | Oota, Hirotaka (1500) | Won 2-0 | +181518 |
| 6block | 327 | Yoshitani, Atsuki (1519) | Lost 0-2 | -181500 |
| 7block | 300 | Kodera, Tetsuo (1500) | Won 2-0 | +181518 |
| top | average opponent: 1492record: 4-3 | new rating: 1518 | ||