Kato, Masahiro
Current rating: 1553
Record: 20-21-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 300 | Oota, Yusuke (1720) | Won 2-0 | +231445 |
| 2pioneer | 117 | Shichinohe, Shuichi (1517) | Won 2-1 | +201465 |
| 3pioneer | 163 | Sakakura, Katsuya (1608) | Won 2-1 | +201485 |
| 4pioneer | 188 | Tokuyama, Yoshihiko (1718) | Lost 0-2 | -131472 |
| 5pioneer | 353 | Aoki, Ryousuke (1662) | Won 2-1 | +211493 |
| 6pioneer | 115 | Miyake, Hideyuki (1848) | Lost 1-2 | -121481 |
| 7pioneer | 188 | Nagai, Mamoru (1793) | Won 2-1 | +241505 |
| 8pioneer | 116 | Saito, Yohei (1575) | Won 2-0 | +191524 |
| 9pioneer | 65 | Kashiwagi, Yuki (1479) | Won 2-0 | +171541 |
| 10pioneer | 53 | Hirasawa, Daisuke (1642) | Won 2-1 | +201561 |
| 11pioneer | 56 | Hasegawa, Shun-ya (1591) | Won 2-0 | +191580 |
| 12pioneer | 30 | Yamada, Mitsuhiro (1601) | Won 2-0 | +181598 |
| 13pioneer | 11 | Yamada, Yosuke9422 (1703) | Lost 0-2 | -161582 |
| 14pioneer | 42 | Nagao, Yasutaka (1819) | Lost 0-2 | -141568 |
| 15pioneer | 61 | Qin, Yuxiang (1742) | Lost 1-2 | -151553 |
| top | average opponent: 1668record: 10-5 | new rating: 1553 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 112 | Abe, Hirofumi (1545) | Lost 1-2 | -151396 |
| 2standard | 410 | Aikawa, Yukinojo (1499) | Won 2-0 | +191415 |
| 3standard | 697 | Sano, Masayo (1426) | Won 2-0 | +191434 |
| 4standard | 553 | Shimoyama, Kazuma (1420) | Won 2-0 | +171451 |
| 5standard | 402 | Murase, Hiroshi (1608) | Lost 1-2 | -151436 |
| 6standard | 402 | Sato, Yuki (1485) | Lost 0-2 | -171419 |
| 7standard | 513 | Goto, Katsuhiro (1470) | Lost 1-2 | -171402 |
| 8standard | 450 | Wani, Kenichi (1522) | Won 2-1 | +201422 |
| top | average opponent: 1497record: 4-4 | new rating: 1422 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 22 | Okada, Wataru (1732) | Won 2-1 | +231457 |
| 4legacy | 88 | Hashimoto, Satoshi 6288 (1623) | Lost 1-2 | -151442 |
| 5legacy | 263 | Nakatani, Hiroki (1438) | Lost 0-2 | -181424 |
| 6legacy | 255 | Marui, Yuki (1578) | Lost 1-2 | -151409 |
| 7legacy | 328 | Hurukawa, Yuta (1446) | Lost 0-2 | -181391 |
| 8legacy | 405 | Murakami, Ryota (1496) | Won 2-1 | +201411 |
| top | average opponent: 1552record: 2-4 | new rating: 1411 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 85 | Kikuchi, Kouhei (1500) | Lost 1-2 | -181446 |
| 2modern | 528 | Yamaguchi, Katsuhiro (1497) | Lost 0-2 | -171429 |
| 3modern | 676 | Migishiro, Ayumu (1464) | Won 2-0 | +191448 |
| 4modern | 598 | Enomoto, Masayuki (1483) | Lost 0-1 | -171431 |
| 5modern | 611 | Katsumata, Yasutaka (1465) | Lost 0-2 | -181413 |
| 6modern | 553 | Sugitani, Kyousuke (1448) | Draw 1-1 | +11414 |
| 7modern | 467 | Koike, manabu (1464) | Lost 1-2 | -171397 |
| 8modern | 387 | Nakaoka, Koshiro (1428) | Won 2-1 | +181415 |
| 9modern | 301 | Tsuchiya, Yoshihiro (1428) | Won 2-0 | +191434 |
| top | average opponent: 1464record: 3-5-1 | new rating: 1434 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 383 | Ishida, Yoshinobu (1500) | Lost 0-2 | -181482 |
| 2block | 405 | Konno, Yoshiki (1482) | Won 2-0 | +181500 |
| 3block | 518 | Kanazawa, Hitoshi (1500) | Lost 0-2 | -181482 |
| 4block | 552 | Yanagi, Yasuhiko (1464) | Lost 0-2 | -181464 |
| top | average opponent: 1487record: 1-3 | new rating: 1464 | ||