Hasegawa, Keijiro
Current rating: 1623
Record: 15-8
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 204 | Takeyama, Hiroaki (1560) | Won 2-0 | +171615 |
| 2pioneer | 216 | Hasegawa, Koki (1484) | Won 2-0 | +161631 |
| 3pioneer | 82 | Muraoka, Hideaki (1471) | Lost 1-2 | -211610 |
| 4pioneer | 519 | Hashidume, Shintaro (1540) | Won 2-0 | +161626 |
| 5pioneer | 274 | Matsushima, Naoto (1455) | Won 2-1 | +151641 |
| 6pioneer | 156 | Kim, Chang-Hoi (1655) | Lost 0-2 | -171624 |
| 7pioneer | 232 | Wada, Kazumasa (1682) | Lost 1-2 | -171607 |
| 8pioneer | 325 | Nakamoto, Takahiro (1531) | Won 2-1 | +161623 |
| average opponent: 1547record: 5-3 | new rating: 1623 | |||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 38 | Sato, Koji (1502) | Won 2-1 | +181518 |
| 2standard | 129 | Yamamoto, Tetsuji (1708) | Won 2-1 | +211539 |
| 3standard | 351 | Kato, Kensuke (1964) | Lost 1-2 | -101529 |
| 4standard | 458 | Tsuruoka, Shouta (1552) | Lost 0-2 | -181511 |
| 5standard | 646 | Hayashi, Shohei (1502) | Won 2-1 | +181529 |
| 6standard | 357 | Sato, Shota (1408) | Won 2-0 | +161545 |
| 7standard | 215 | Muraoka, Hideaki (1474) | Won 2-1 | +171562 |
| 8standard | 253 | Moon, Seunghwan (1544) | Won 2-1 | +171579 |
| 9standard | 111 | Tomita, Hiroki (1434) | Lost 1-2 | -201559 |
| 10standard | 156 | Takahira, Shunsuke (1711) | Lost 1-2 | -161543 |
| 11standard | 146 | Saito, Tomoe (1314) | Won 2-0 | +141557 |
| 12standard | 110 | Nishio, Tomoyasu (1546) | Won 2-1 | +181575 |
| 13standard | 94 | Oooka, Daiji (1505) | Won 2-1 | +171592 |
| 14standard | 86 | Yoshimori, Sho (1691) | Won 2-1 | +201612 |
| 15standard | 68 | Kometani, Yuki (1836) | Lost 0-2 | -141598 |
| average opponent: 1579record: 10-5 | new rating: 1598 | |||