Nagumo, Kazuya
Current rating: 1745 (#4133)
Record: 26-9 (GP) / 2-5-1 (professional)
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1627 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 13 | Shimada, Masahiko (1788) | Won 2-0 | +211648 |
| 2sealed | 263 | Park, Taesoo (1517) | Won 2-1 | +151663 |
| 3sealed | 171 | Shimadu, Naofumi (1568) | Lost 1-2 | -191644 |
| 4sealed | 713 | Iwasaki, Junya (1406) | Won 2-0 | +131657 |
| 5sealed | 302 | Nishiura, Ryosuke (1710) | Won 2-0 | +191676 |
| 6sealed | 322 | Igarashi, Takuma (1598) | Won 2-0 | +171693 |
| 7sealed | 67 | Mizuno, Masahito (1497) | Won 2-1 | +141707 |
| 8sealed | 83 | Ninomiya, Souta (1754) | Won 2-0 | +191726 |
| 9sealed | 15 | Kawaguchi, Tetsu (1795) | Lost 0-2 | -161710 |
| 10draft | 112 | Kanegawa, Toshiya (1854) | Lost 0-2 | -161694 |
| 11draft | 112 | Odagiri, Mato (1634) | Won 2-0 | +171711 |
| 12draft | 118 | Hiraoka, Shigenori (1503) | Lost 0-2 | -221689 |
| 13draft | 184 | Takamura, Ryoma (1634) | Won 2-0 | +171706 |
| 14draft | 27 | Takano, Hayato (1684) | Won 2-1 | +181724 |
| 15draft | 146 | Kobayasi, Tomoya (1879) | Won 2-0 | +211745 |
| top | average opponent: 1655record: 11-4 | new rating: 1745 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1658 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 333 | Hirose, Yutaka (1403) | Lost 1-2 | -231635 |
| 2sealed | 614 | Yasugi, Haruaki (1485) | Won 2-0 | +151650 |
| 3sealed | 539 | Takenaka, Shunsuke (1435) | Won 2-1 | +141664 |
| 4sealed | 353 | Arita, Kento (1749) | Lost 0-2 | -161648 |
| 5sealed | 831 | Urabe, Ryosuke (1482) | Lost 0-2 | -211627 |
| top | average opponent: 1511record: 2-3 | new rating: 1627 | ||
| Pro Tour Hour of Devastation (HOU standard) | starting rating: 1707 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 122 | Feeney, Luke (1640) | Draw 1-1 | -11706 |
| 2draft | 124 | de Jesus Freitas, Marcos Paulo (2026) | Lost 0-2 | -131693 |
| 3draft | 22 | Freyre, Ignacio (1528) | Lost 0-2 | -211672 |
| 4standard | 201 | Piccinno, Richard (1582) | Won 2-0 | +171689 |
| 5standard | 157 | Sapiras, Armando (1739) | Lost 0-2 | -171672 |
| 6standard | 188 | Nassif, Gabriel (2004) | Lost 1-2 | -131659 |
| 7standard | 205 | Brandtner, Michael (1663) | Won 2-1 | +191678 |
| 8standard | 178 | Gorniak, Mariusz (1568) | Lost 0-2 | -201658 |
| top | average opponent: 1719record: 2-5-1 | new rating: 1658 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 676 | Abe, Masanori (1500) | Won 2-1 | +181518 |
| 2modern | 564 | Nisii, Tatsuya (1678) | Won 2-0 | +211539 |
| 3modern | 610 | Yashiro, Sho (1458) | Won 2-0 | +161555 |
| 4modern | 303 | Kodama, Kentaro (1556) | Won 2-0 | +181573 |
| 5modern | 21 | Shimizu, Yuji (1593) | Won 2-0 | +191592 |
| 6modern | 58 | Muramatsu, Yusuke (1680) | Lost 1-2 | -171575 |
| 7modern | 182 | Han, Xi (1623) | Won 2-0 | +191594 |
| 8modern | 86 | Hasegawa, Tsuyoshi (1608) | Won 2-1 | +191613 |
| 9modern | 40 | Ishikawa, Takuma 3754 (1545) | Lost 1-2 | -201593 |
| 10modern | 88 | Wakai, Kiyohito (1573) | Won 2-1 | +181611 |
| 11modern | 37 | Koseki, Kouta (1633) | Won 2-0 | +181629 |
| 12modern | 54 | Hoshino, Masaaki (1756) | Won 2-0 | +211650 |
| 13modern | 13 | Takenaka, Takumi (1750) | Won 2-1 | +191669 |
| 14modern | 20 | Huang, Tachi (1687) | Won 2-0 | +191688 |
| 15modern | 12 | Matsui, Yasuo (1750) | Won 2-0 | +191707 |
| top | average opponent: 1626record: 13-2 | new rating: 1707 | ||