Seki, Manabu
Current rating: 1393
Record: 9-16-1
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 176 | Yamamoto, Koki (1528) | Lost 0-2 | -161405 |
| 3sealed | 597 | Banno, Kunihiko (1668) | Lost 0-2 | -131392 |
| 4sealed | 801 | Wachigai, Hirotaka (1361) | Won 2-0 | +171409 |
| 5sealed | 782 | Hagihara, Shota (1470) | Lost 1-2 | -161393 |
| top | average opponent: 1507record: 1-3 | new rating: 1393 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 773 | Ito, Keijiro (1500) | Lost 0-2 | -181476 |
| 2sealed | 728 | Sonezaki, Tsutomu (1481) | Lost 0-2 | -171459 |
| 3sealed | 1024 | Jinba, Yuusuke (1463) | Lost 0-2 | -181441 |
| 4sealed | 1098 | Shinya, Takeshi (1401) | Won 2-1 | +171458 |
| 5sealed | 986 | Otuka, Ryutaro (1368) | Lost 0-2 | -201438 |
| 6sealed | 875 | Shimizu, Hidenori (1444) | Won 2-1 | +181456 |
| 7sealed | 680 | Akimoto, Daichi (1444) | Lost 1-2 | -181438 |
| 8sealed | 618 | Nomura, Hiroshi (1504) | Lost 1-2 | -171421 |
| top | average opponent: 1451record: 2-6 | new rating: 1421 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 185 | Narumi, Masaru (1454) | Draw 1-1 | 01450 |
| 2standard | 208 | Katagiri, Shinichi (1612) | Lost 0-2 | -151435 |
| 3standard | 303 | Ashikaga, Masatoshi (1524) | Lost 0-2 | -161419 |
| 4standard | 403 | Kitou, You (1465) | Won 2-0 | +191438 |
| 5standard | 336 | Noto, Ryuuichi (1479) | Won 2-0 | +181456 |
| 6standard | 261 | Itou, Akira (1499) | Won 2-0 | +191475 |
| 7standard | 204 | Yazawa, Yoshimichi (1415) | Won 2-0 | +171492 |
| 8standard | 139 | Suzuki, Naoko (1533) | Won 2-1 | +191511 |
| 9standard | 92 | Sasaki, Yuuki (1603) | Lost 1-2 | -171494 |
| top | average opponent: 1509record: 5-3-1 | new rating: 1494 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 128 | Makino, Yuuichi (1452) | Lost 1-2 | -191481 |
| 2standard | 251 | Yoneda, Taiichiro (1482) | Lost 0-2 | -181463 |
| 3standard | 328 | Yamashita, Kazutaka (1465) | Won 2-0 | +181481 |
| 4standard | 328 | Takanashi, Kouji (1639) | Lost 1-2 | -151466 |
| 5standard | 311 | Suzuki, Kei (1576) | Lost 0-2 | -161450 |
| top | average opponent: 1523record: 1-4 | new rating: 1450 | ||