Sumi, Kango
Current rating: 1664
Record: 17-8-1
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 515 | Kawai, Kentaro (1483) | Won 2-1 | +171555 |
| 2sealed | 384 | Hamada, Junji (1548) | Won 2-1 | +181573 |
| 3sealed | 174 | Yasue, Hayato (1499) | Won 2-0 | +171590 |
| 4sealed | 150 | Mitsui, Hideo (1745) | Lost 0-2 | -151575 |
| 5sealed | 351 | Tsuruta, Tomoya (1535) | Lost 1-2 | -191556 |
| 6sealed | 414 | Natsukawa, Makoto (1610) | Won 2-0 | +191575 |
| 7sealed | 422 | Nagano, Masahiro (1578) | Won 2-0 | +181593 |
| 8sealed | 265 | Takiguchi, Yuta (1583) | Won 2-1 | +181611 |
| 9sealed | 201 | Hasegawa, Kazunari (1798) | Lost 0-2 | -151596 |
| 10draft | 196 | Okamura, Yoshiaki (1583) | Won 2-1 | +181614 |
| 11draft | 97 | Mori, Fumiya (1530) | Won 2-0 | +161630 |
| 12draft | 49 | Hando, Shinnosuke (1586) | Lost 0-2 | -181612 |
| 13draft | 37 | Endo, Takuya7968 (1412) | Won 2-0 | +141626 |
| 14draft | 36 | Kuroiwa, Satoshi (1640) | Won 2-1 | +181644 |
| 15draft | 30 | Ohshiro, Syusaku (1717) | Won 2-0 | +201664 |
| average opponent: 1590record: 11-4 | new rating: 1664 | |||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 200 | Fujiya, Takahiro (1582) | Lost 0-2 | -171483 |
| 2standard | 1098 | Sugioka, Noriyuki (1522) | Won 2-0 | +191502 |
| 3standard | 977 | Kohagura, Ryo (1499) | Won 2-1 | +181520 |
| 4standard | 598 | Anan, Kazuyoshi (1576) | Lost 0-2 | -171503 |
| 5standard | 803 | Sugizaki, Shunsuke (1561) | Draw 1-1 | +11504 |
| 6standard | 1033 | Kamiya, Hiroki (1499) | Won 2-1 | +181522 |
| 7standard | 768 | Masaya, Arai (1514) | Won 2-0 | +181540 |
| 8standard | 527 | Omura, Hajime (1482) | Won 2-0 | +171557 |
| 9standard | 316 | Tomita, Tsubasa (1553) | Won 2-0 | +181575 |
| 10standard | 203 | Niwa, Kohei (1561) | Lost 1-2 | -181557 |
| 11standard | 334 | Itou, Hayato (Osaka) (1545) | Lost 1-2 | -191538 |
| average opponent: 1536record: 6-4-1 | new rating: 1538 | |||