Hiroki, Ryouta
Current rating: 1421
Record: 5-10
| Grand Prix Yokohama 2012 (modern) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 36 | Nakahashi, Yoshihiro (1500) | Lost 0-2 | -171427 |
| 2modern | 644 | Tamura, Ryohei (1482) | Won 2-0 | +191446 |
| 3modern | 543 | Muranaka, Hiroya (1559) | Lost 0-2 | -161430 |
| 4modern | 646 | Matsukawa, Takahiro (1481) | Won 2-1 | +191449 |
| 5modern | 489 | Usami, Taro (1563) | Lost 0-2 | -161433 |
| 6modern | 509 | Yamamoto, Akimasa (1773) | Lost 1-2 | -121421 |
| average opponent: 1560record: 2-4 | new rating: 1421 | |||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 56 | Narita, Yasumasa (1500) | Lost 1-2 | -181482 |
| 2extended | 303 | Takaku, Takeshi (1482) | Lost 1-2 | -181464 |
| 3extended | 423 | Yazawa, Yoshimichi (1450) | Won 2-1 | +181482 |
| 4extended | 461 | Koakutsu, Masato (1480) | Lost 1-2 | -181464 |
| 5extended | 401 | Hirose, Yuuki (1503) | Lost 1-2 | -181446 |
| 6extended | 371 | Kobashigawa, Davin (1443) | Won 2-0 | +181464 |
| 7extended | 282 | Aihara, Hironori (1354) | Won 2-1 | +161480 |
| 8extended | 113 | Karasawa, Kouichi (1483) | Lost 0-2 | -181462 |
| 9extended | 154 | Harano, Takahiro (1462) | Lost 0-2 | -181444 |
| average opponent: 1462record: 3-6 | new rating: 1444 | |||