Aihara, Hironori
Current rating: 1342
| Grand Prix Yokohama 2010 (extended) | starting rating: 1377 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 416 | Koseki, Kouta (1518) | Lost 1-2 | -161361 |
| 2extended | 338 | Ikeda, Yuuichirou (1489) | Lost 0-2 | -151346 |
| 3extended | 434 | Yagimoto, Ken (1393) | Lost 0-2 | -181328 |
| 4extended | 486 | Matsuo, Tsukasa (1447) | Won 2-0 | +211349 |
| 5extended | 415 | Kobayashi, Jun (1331) | Won 2-0 | +171366 |
| 6extended | 314 | Azuma, Motokiyo (1671) | Lost 0-2 | -121354 |
| 7extended | 282 | Hiroki, Ryouta (1464) | Lost 1-2 | -161338 |
| 8extended | 51 | Sugita, Kou (1444) | Won 2-0 | +201358 |
| 9extended | 156 | Hidaka, Ayumi (1506) | Lost 1-2 | -161342 |
| top | average opponent: 1474record: 3-6 | new rating: 1342 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 167 | Kaminaka, Takahiro (1481) | Lost 1-2 | -171410 |
| 2sealed | 248 | Cho, Masaki (1482) | Lost 1-2 | -171393 |
| 3sealed | 273 | Yokomizo, Gouki (1465) | Lost 0-2 | -161377 |
| top | average opponent: 1476record: 0-3 | new rating: 1377 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 103 | Jitsukawa, Naofumi (1500) | Lost 1-2 | -181482 |
| 2block | 234 | Kawashima, Mitsuhiro (1482) | Lost 0-2 | -181464 |
| 3block | 342 | Kamei, Toru (1378) | Lost 1-2 | -201444 |
| 4block | 374 | Goto, Takashi (1484) | Lost 0-2 | -171427 |
| top | average opponent: 1461record: 0-4 | new rating: 1427 | ||