Watanabe, Seiichiro
Current rating: 1454
Record: 4-7
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 381 | Toyoda, Yorito (1515) | Won 2-0 | +191483 |
| 2pioneer | 139 | Kamikawa, Yusuke (1521) | Won 2-0 | +191502 |
| 3pioneer | 236 | Yan, Gan (1821) | Lost 0-2 | -131489 |
| 4pioneer | 503 | Uchida, Seiya (1574) | Lost 1-2 | -161473 |
| 5pioneer | 601 | Tsutsumi, Yukihiro (1434) | Lost 0-2 | -191454 |
| average opponent: 1573record: 2-3 | new rating: 1454 | |||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 410 | Urano, Shohei (1464) | Lost 1-2 | -191481 |
| 2sealed | 822 | Arthur, Mimi (1633) | Won 2-0 | +211502 |
| 3sealed | 739 | Yao, Zhang (1449) | Lost 0-2 | -191483 |
| 4sealed | 908 | Maki, Ryosuke (1570) | Won 2-1 | +201503 |
| 5sealed | 613 | Ito, Wataru (1535) | Lost 0-2 | -181485 |
| 6sealed | 771 | Kobayashi, Jun0116 (1316) | Lost 1-2 | -211464 |
| average opponent: 1495record: 2-4 | new rating: 1464 | |||