Otani, Kodai
Current rating: 1615
Record: 13-7
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 581 | Matumoto, Yoshitaka (1671) | Lost 0-2 | -141471 |
| 2standard | 795 | Okuhira, Yoshihisa (1447) | Won 2-1 | +171488 |
| 3standard | 902 | Urabe, Hirofumi (1388) | Won 2-0 | +171505 |
| 4standard | 734 | Katayama, Chiharu (1535) | Won 2-1 | +181523 |
| 5standard | 327 | Koike, Junya (1453) | Won 2-1 | +171540 |
| 6standard | 349 | Tanaka, Ryuuma (1474) | Won 2-0 | +171557 |
| 7standard | 240 | Saito, Hirotsugu (1769) | Won 2-1 | +211578 |
| 8standard | 226 | Shindo, Yuto (1490) | Lost 1-2 | -191559 |
| 9standard | 175 | Okamoto, Yoshiaki (1549) | Won 2-1 | +181577 |
| 10standard | 86 | Guan, Thomas Zhennan (1503) | Won 2-0 | +161593 |
| 11standard | 53 | Sugimoto, Takashi (1582) | Lost 1-2 | -181575 |
| 12standard | 107 | Urasawa, Taiji (1941) | Won 2-0 | +251600 |
| 13standard | 72 | Suzuki, Uta (1510) | Won 2-0 | +161616 |
| 14standard | 46 | Tokuyama, Yoshihiko (1563) | Won 2-1 | +171633 |
| 15standard | 28 | Kimura, Kenta (1610) | Lost 1-2 | -181615 |
| average opponent: 1566record: 11-4 | new rating: 1615 | |||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 149 | Fujii, Tomoyuki (1591) | Lost 1-2 | -161484 |
| 2sealed | 609 | Nankou, Yuukichi (1480) | Won 2-0 | +181502 |
| 3sealed | 561 | Hostettler, Christophe (1743) | Lost 0-2 | -141488 |
| 4sealed | 999 | Iwata, Ryoji (1415) | Won 2-0 | +171505 |
| 5sealed | 744 | Negishi, Haruki (1443) | Lost 0-2 | -201485 |
| average opponent: 1534record: 2-3 | new rating: 1485 | |||