Ootsuka, Koutarou(Miyagi)
Current rating: 1446
Record: 3-6
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 177 | Suzuki, Ryuuichi (1480) | Lost 1-2 | -191482 |
| 2sealed | 192 | Toyota, Shimpei (1482) | Lost 1-2 | -181464 |
| 3sealed | 239 | Kawakami, Kouhei (1465) | Lost 1-2 | -181446 |
| average opponent: 1476record: 0-3 | new rating: 1446 | |||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 203 | Ogura, Shigeru (1500) | Won 2-0 | +181518 |
| 2block | 64 | Suzuki, Akiyoshi (1518) | Lost 0-2 | -181500 |
| 3block | 284 | Kawai, Satoshi (1536) | Won 2-0 | +191519 |
| 4block | 146 | Kawashima, Yasuyoshi (1522) | Lost 1-2 | -181501 |
| 5block | 216 | Suginaka, Takaaki (1500) | Won 2-1 | +181519 |
| 6block | 169 | Ito, Yuichi (1520) | Lost 0-2 | -181501 |
| average opponent: 1516record: 3-3 | new rating: 1501 | |||