Chiba, Youhei
Current rating: 1416
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 29 | Harada, Toshiya (1373) | Won 2-1 | +161462 |
| 2standard | 93 | Marcik, Michal (1749) | Lost 1-2 | -131449 |
| 3standard | 249 | Ushima, Kousuke (1460) | Lost 1-2 | -171432 |
| 4standard | 326 | Fukumoto, Hiroaki (1538) | Lost 1-2 | -161416 |
| top | average opponent: 1530record: 1-3 | new rating: 1416 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 131 | Xu, Mengxiang (1484) | Lost 1-2 | -181464 |
| 2extended | 411 | Yamashiro, Yusuke (1482) | Won 2-1 | +181482 |
| 3extended | 358 | Sekizawa, Takayuki (1426) | Lost 0-2 | -191463 |
| 4extended | 440 | Yamashita, Hiromichi (1483) | Lost 1-2 | -171446 |
| top | average opponent: 1469record: 1-3 | new rating: 1446 | ||
| Grand Prix Sendai 2001 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 92 | Maruyama, Takaaki (1500) | Lost 0-2 | -181482 |
| top | record: 0-1 | new rating: 1482 | ||