Yamazaki, Keiji
Current rating: 1511
Record: 6-6
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 198 | Wamme, Akihiro (1500) | Lost 1-2 | -181471 |
| 2sealed | 390 | Ogawa, Youhei (1486) | Won 2-0 | +181489 |
| 3sealed | 214 | Nagashima, Yuusuke (1500) | Won 2-0 | +191508 |
| 4sealed | 243 | Moriya, Toshihiko (1711) | Won 2-1 | +211529 |
| 5sealed | 162 | Saito, Taishi (1497) | Lost 0-2 | -181511 |
| 6sealed | 187 | Yamanouchi, Yuki (1521) | Won 2-1 | +181529 |
| 7sealed | 117 | Zhao, Tianyu (1516) | Lost 0-2 | -181511 |
| average opponent: 1533record: 4-3 | new rating: 1511 | |||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 33 | Andou, Ryou (1500) | Lost 0-2 | -181482 |
| 2modern | 487 | Miwa, Tatsuya (1445) | Won 2-0 | +171499 |
| 3modern | 531 | Serizawa, Yuuki (1469) | Won 2-0 | +181517 |
| 4modern | 302 | Mori, Katsuhiro (2008) | Lost 1-2 | -101507 |
| 5modern | 410 | Kuniteru M., (1499) | Lost 1-2 | -181489 |
| average opponent: 1584record: 2-3 | new rating: 1489 | |||