Kumazawa, Takanori
Current rating: 1348
Record: 4-13
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1393 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 28 | Takakuwa, Akihiro (1588) | Lost 0-2 | -151378 |
| 2sealed | 556 | Matoba, Takashi (1619) | Lost 0-2 | -141364 |
| 3sealed | 1099 | Watai, Yohei (1424) | Lost 0-2 | -161348 |
| top | average opponent: 1544record: 0-3 | new rating: 1348 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 220 | Seiwada, Koyo (1493) | Lost 0-2 | -171409 |
| 2sealed | 850 | Okazawa, Tatsuya (1289) | Won 2-1 | +161425 |
| 3sealed | 540 | Miyabe, Teruya (1500) | Lost 1-2 | -171408 |
| 4sealed | 950 | Endo, Akiteru (1535) | Lost 0-2 | -151393 |
| top | average opponent: 1454record: 1-3 | new rating: 1393 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1368 | Ishii, Yuki (1410) | Lost 1-2 | -181425 |
| 2sealed | 1305 | Okamoto, Yoshihiko (1519) | Lost 0-2 | -171408 |
| 3sealed | 1314 | Kawai, Toshihiko (1388) | Won 2-1 | +181426 |
| top | average opponent: 1439record: 1-2 | new rating: 1426 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 144 | Yamamoto, Yuusuke7856 (1500) | Lost 0-2 | -181482 |
| 2sealed | 338 | Nakano, Makoto (1484) | Lost 0-2 | -181464 |
| 3sealed | 495 | Itou, Hayato6706 (1446) | Won 2-1 | +181482 |
| 4sealed | 420 | Udagawa, Yuuya (1438) | Lost 1-2 | -191463 |
| 5sealed | 417 | Wada, Tomoya (1498) | Lost 0-2 | -171446 |
| 6sealed | 366 | Takahashi, Yoshiaki (1413) | Won 2-0 | +171463 |
| 7sealed | 295 | Shibata, Masataka (1365) | Lost 1-2 | -201443 |
| top | average opponent: 1449record: 2-5 | new rating: 1443 | ||