Kubota, Toru
Current rating: 1500
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 105 | Isobe, Masato (1568) | Lost 0-2 | -171499 |
| 2sealed | 216 | Suginaka, Toshio (1561) | Won 2-1 | +191518 |
| 3sealed | 206 | Inoue, Yoshiko (1465) | Draw 1-1 | -11517 |
| 4sealed | 197 | Fukai, Koichi (1487) | Draw 1-1 | -11516 |
| 5sealed | 206 | Sugiyama, Hitoshi (1589) | Lost 0-2 | -161500 |
| top | average opponent: 1534record: 1-2-2 | new rating: 1500 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 18 | Horie, Yusuke (1500) | Lost 1-2 | -181519 |
| 2sealed | 217 | Kawasaki, Tetsuharu (1482) | Won 2-1 | +171536 |
| 3sealed | 210 | Wakuri, Akira (1579) | Won 2-0 | +191555 |
| 4sealed | 112 | Kobayashi, Akihito (1455) | Lost 1-2 | -201535 |
| 5sealed | 135 | Kitada, Mitsutoshi (1462) | Lost 1-2 | -191516 |
| top | average opponent: 1496record: 2-3 | new rating: 1516 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 115 | Kosaka, Yoko (1500) | Won 2-0 | +181518 |
| 2sealed | 126 | Aki, Yasutoshi (1518) | Won 2-0 | +181536 |
| 3sealed | 97 | Hirakawa, Motoki (1518) | Won 2-0 | +181554 |
| 4sealed | 22 | Fujino, Kimihiro (1566) | Won 2-1 | +181572 |
| 5sealed | 12 | Yagi, Akira (1507) | Won 2-1 | +171589 |
| 6sealed | 4 | Douyama, Tsuyoshi (1692) | Lost 0-2 | -161573 |
| 7sealed | 16 | Watanabe, Masanari (1576) | Lost 1-2 | -181555 |
| 8sealed | 49 | Yamahara, Toshihisa (1595) | Lost 1-2 | -181537 |
| top | average opponent: 1559record: 5-3 | new rating: 1537 | ||