Oobuchi, Masahiro
Current rating: 1445
Record: 1-4
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 211 | Furukawa, Ken'ichi (1503) | Lost 0-2 | -181482 |
| 2block | 316 | Kawai, Katsuya (1479) | Lost 1-2 | -181464 |
| 3block | 345 | Konno, Daisuke (1463) | Won 2-1 | +181482 |
| 4block | 282 | Kobori, Tetsuhiro (1413) | Lost 1-2 | -191463 |
| 5block | 320 | Omata, Yuuji (1464) | Lost 0-2 | -181445 |
| average opponent: 1465record: 1-4 | new rating: 1445 | |||