Tateiwa, Masato
Current rating: 1345
Record: 5-14
| Grand Prix Yokohama 2019 (modern) | starting rating: 1380 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 549 | Iwamura, Ryouichi (1424) | Lost 0-2 | -171363 |
| 2modern | 920 | Tsuchida, Yoshitaka (1430) | Lost 0-2 | -171346 |
| 3modern | 1048 | Sugai, Kazuma (1470) | Lost 1-2 | -151331 |
| 4modern | 1132 | Miyazaki, Kazuyuki (1138) | Won 2-0 | +141345 |
| top | average opponent: 1366record: 1-3 | new rating: 1345 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1428 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 159 | Tsujimoto, Hideki (1669) | Lost 1-2 | -131415 |
| 2legacy | 467 | Antonio Miguel, Calma (1481) | Lost 1-2 | -171398 |
| 3legacy | 646 | Mizoguchi, Satoru (1354) | Lost 0-2 | -191379 |
| 4legacy | 645 | Hong, Liang (1442) | Lost 0-2 | -171362 |
| 5legacy | 648 | Takase, Junpei (1396) | Won 2-1 | +191381 |
| 6legacy | 564 | Hayashi, Kosuke (1449) | Won 2-0 | +191400 |
| 7legacy | 492 | Ito, Ryo (1300) | Lost 0-2 | -201380 |
| top | average opponent: 1441record: 2-5 | new rating: 1380 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 660 | Nakakura, Satoshi (1477) | Lost 1-2 | -181465 |
| 2legacy | 605 | Suzuki, Kiyofumi (1448) | Lost 0-2 | -191446 |
| 3legacy | 1132 | Mukai, Yukiaki (1469) | Won 2-0 | +191465 |
| 4legacy | 826 | Sakata, Atsushi (1481) | Lost 1-2 | -181447 |
| 5legacy | 990 | Shinmura, Kazuya (1417) | Lost 1-2 | -191428 |
| top | average opponent: 1459record: 1-4 | new rating: 1428 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 201 | Nakagawa, Terushi (1500) | Won 2-0 | +181518 |
| 2sealed | 142 | Sugiyama, Takahiro (1557) | Lost 0-2 | -171501 |
| 3sealed | 476 | Takahashi, Masahiko (1500) | Lost 1-2 | -181483 |
| top | average opponent: 1519record: 1-2 | new rating: 1483 | ||