Otani, Hiroaki
Current rating: 1529
Record: 10-9-2
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 713 | Satou, Takahisa (1616) | Won 2-0 | +191566 |
| 2sealed | 789 | Inuzuka, Satoshi (1648) | Lost 0-2 | -171549 |
| 3sealed | 1022 | Fujii, Shingo (1501) | Lost 0-2 | -191530 |
| 4sealed | 987 | Endo, Natsumi (1464) | Draw 1-1 | -11529 |
| top | average opponent: 1557record: 1-2-1 | new rating: 1529 | ||
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 108 | Murata, Shouta (1588) | Won 2-1 | +191545 |
| 2sealed | 72 | Oota, Yuusuke (1475) | Won 2-0 | +171562 |
| 3sealed | 32 | Ikawa, Yoshihiko (1518) | Lost 1-2 | -191543 |
| 4sealed | 116 | Inoue, Toru (1544) | Won 2-0 | +181561 |
| 5sealed | 45 | Higaki, Takao (1764) | Lost 1-2 | -141547 |
| top | average opponent: 1578record: 3-2 | new rating: 1547 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 102 | Iino, Ryuji (1499) | Won 2-0 | +171518 |
| 2block | 94 | Chang, Chih Ping (1482) | Won 2-1 | +181536 |
| 3block | 65 | Sato, Mitsunori (1573) | Won 2-1 | +191555 |
| 4block | 9 | Hada, Atsushi (1500) | Won 2-0 | +171572 |
| 5block | 2 | Shiozu, Ryouma (1863) | Lost 1-2 | -131559 |
| 6block | 56 | Masuno, Ryosuke (1582) | Lost 1-2 | -181541 |
| 7block | 58 | Kubota, Kenta (1691) | Lost 0-2 | -151526 |
| top | average opponent: 1599record: 4-3 | new rating: 1526 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 6 | Kobori, Tetsuhiro (1414) | Lost 1-2 | -201480 |
| 2sealed | 129 | Fujikawa, Hiroyuki (1482) | Won 2-1 | +181498 |
| 3sealed | 130 | Maruyama, Tomohiro (1646) | Won 2-1 | +211519 |
| 4sealed | 96 | Watanabe, Masao (1516) | Draw 1-1 | 01519 |
| 5sealed | 101 | Higashi, Tetsutaro (1488) | Lost 0-2 | -181501 |
| top | average opponent: 1509record: 2-2-1 | new rating: 1501 | ||