Yamamoto, Keitaro
Current rating: 1492
Record: 8-9
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1512 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 231 | Sakai, Toshinori (1467) | Lost 0-2 | -191493 |
| 3standard | 258 | Ishihara, Ken (1501) | Lost 0-2 | -171476 |
| 4standard | 348 | Kimura, Shigeki (1481) | Won 2-1 | +181494 |
| 5standard | 334 | Ohtsuka, Hayato (1420) | Won 2-0 | +161510 |
| 6standard | 189 | Ogawa, Hiroyuki (1468) | Lost 1-2 | -181492 |
| average opponent: 1467record: 2-3 | new rating: 1492 | |||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 217 | Karube, Ryo (1535) | Won 2-0 | +191519 |
| 2sealed | 142 | Terada, Atsushi (1571) | Won 2-0 | +191538 |
| 3sealed | 81 | Nagaoka, Takayuki (1753) | Won 2-0 | +211559 |
| 4sealed | 17 | Morita, Masahiko (1832) | Won 2-1 | +231582 |
| 5sealed | 23 | Suga, Takeichi (1551) | Lost 0-2 | -181564 |
| 6sealed | 37 | Aki, Yasutoshi (1531) | Lost 1-2 | -191545 |
| 7sealed | 80 | Mouri, Takemasa (1631) | Won 2-1 | +201565 |
| 8sealed | 117 | Shibuya, Yuuto (1599) | Won 2-1 | +181583 |
| 9rochester | 29 | Imai, Kimio (1599) | Lost 0-2 | -171566 |
| 10rochester | 29 | Maruyama, Tatsuya (1562) | Lost 1-2 | -181548 |
| 11rochester | 32 | Chijimi, Keiichi (1553) | Lost 0-2 | -181530 |
| 12rochester | 31 | Sato, Hitoshi (1567) | Lost 0-2 | -181512 |
| average opponent: 1607record: 6-6 | new rating: 1512 | |||