Kumakura, Takayuki
Current rating: 1385
| Regional Championships Chiba 2023 (pioneer) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 9 | Iwaki, Ryota (1616) | Lost 0-2 | -151416 |
| 2pioneer | 103 | Yamaguchi, Koutarou (1506) | Lost 1-2 | -161400 |
| 3pioneer | 88 | Takagi, Yuma (1568) | Lost 0-2 | -151385 |
| top | average opponent: 1563record: 0-3 | new rating: 1385 | ||
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 30 | Hase, Hayato (1500) | Lost 1-2 | -171447 |
| 2pioneer | 418 | Ichikawa, Tomokazu (1490) | Won 2-0 | +191466 |
| 3pioneer | 479 | Fujihira, Kohei (1705) | Lost 0-2 | -141452 |
| 4pioneer | 750 | Yamada, Sintarou (1556) | Lost 0-2 | -161436 |
| 5pioneer | 677 | Nishikawa, Shigeki (1150) | Lost 1-2 | -231413 |
| 6pioneer | 631 | Yoshida, Kazuaki (1454) | Lost 0-2 | -171396 |
| 7pioneer | 538 | Yasuda, Keita (1323) | Won 2-0 | +161412 |
| 8pioneer | 427 | Hamatsu, Motoshi (1447) | Won 2-1 | +191431 |
| top | average opponent: 1453record: 3-5 | new rating: 1431 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 301 | Okada, Kazuhiro (1630) | Won 2-1 | +201520 |
| 2standard | 312 | Oonishi, Tomokazu (1482) | Won 2-1 | +181538 |
| 3standard | 321 | Masuno, Ryosuke (1560) | Lost 0-2 | -181520 |
| 4standard | 558 | Aono, Ryo (1523) | Won 2-0 | +181538 |
| 5standard | 377 | Yoshida, Kei (1625) | Lost 0-2 | -161522 |
| 6standard | 331 | Higashide, Masato (1527) | Lost 0-2 | -181504 |
| 7standard | 506 | Miyamoto, Naoki (1452) | Lost 1-2 | -191485 |
| 8standard | 469 | Shiina, Daisuke (1352) | Lost 0-2 | -211464 |
| top | average opponent: 1519record: 3-5 | new rating: 1464 | ||