Kasuga, Koki
Current rating: 1415
Record: 12-18-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 99 | Yamashita, Taiki (1496) | Lost 0-2 | -171433 |
| 2pioneer | 424 | Uehara, Kou (1467) | Lost 0-2 | -171416 |
| 3pioneer | 725 | Fan, Kuangching (1466) | Lost 1-2 | -171399 |
| 4pioneer | 793 | Nakajou, Naoto (1398) | Won 2-0 | +181417 |
| 5pioneer | 726 | Hanawa, Atsushi (1500) | Won 2-1 | +191436 |
| 6pioneer | 602 | Monna, Takaaki (1398) | Won 2-1 | +171453 |
| 7pioneer | 444 | Hata, Tomonori0099 (1419) | Lost 1-2 | -181435 |
| 8pioneer | 414 | Saito, Keisuke (1351) | Lost 1-2 | -201415 |
| top | average opponent: 1437record: 3-5 | new rating: 1415 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 337 | Morita, Kazuki (1437) | Won 2-1 | +191428 |
| 2standard | 204 | Kobayashi, Jun (1565) | Won 2-1 | +201448 |
| 3standard | 375 | Shimoyama, Masatoshi (1692) | Won 2-1 | +231471 |
| 4standard | 314 | Nagano, Keita (1767) | Lost 0-2 | -131458 |
| 5standard | 441 | Ueda, Takushi (1410) | Lost 0-2 | -191439 |
| 6standard | 531 | Hangyo, Tatsuya (1586) | Won 2-1 | +211460 |
| 7standard | 301 | Sui, Xin (1981) | Lost 0-2 | -101450 |
| top | average opponent: 1634record: 4-3 | new rating: 1450 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 460 | Yanagawa, Yuuki (1440) | Lost 0-2 | -181443 |
| 2sealed | 708 | Wada, Kazunori (1523) | Won 2-0 | +191462 |
| 3sealed | 642 | Ikeyama, Kei (1461) | Lost 1-2 | -181444 |
| 4sealed | 860 | Xu, Chenghao (1375) | Lost 0-2 | -191425 |
| 5sealed | 1017 | Okuma, Naoki (1535) | Lost 0-2 | -161409 |
| top | average opponent: 1467record: 1-4 | new rating: 1409 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 502 | Machida, Naoki (1468) | Lost 0-2 | -181458 |
| 2standard | 917 | Tachibana, Korechika (1429) | Draw 1-1 | 01458 |
| 3standard | 1397 | Borresen Rohde, Erik Aleksander (1597) | Lost 1-2 | -161442 |
| 4standard | 1515 | Kishimoto, Keisuke (1463) | Won 2-0 | +191461 |
| 5standard | 1281 | Yoshida, Shotaro (1482) | Won 2-0 | +181479 |
| 6standard | 992 | Masashi, Shirai (1502) | Lost 0-1 | -181461 |
| top | average opponent: 1490record: 2-3-1 | new rating: 1461 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 475 | Okazawa, Tatsuya (1321) | Lost 1-2 | -211479 |
| 2sealed | 349 | Wun, Edwin Wu Choon (1347) | Lost 1-2 | -211458 |
| 3sealed | 557 | Tanaka, Hayato (1499) | Won 2-0 | +191477 |
| 4sealed | 484 | Ota, Kyosuke (1480) | Won 2-1 | +181495 |
| 5sealed | 279 | Tomimatsu, Yosihumi (1451) | Lost 0-2 | -191476 |
| top | average opponent: 1419record: 2-3 | new rating: 1476 | ||