Watanabe, Katsuyoshi
Current rating: 1397
| Grand Prix Chiba 2016 (legacy) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 304 | Kubo, Yuuta (1554) | Lost 1-2 | -161430 |
| 2legacy | 782 | Michibata, Tatsuya (1517) | Lost 1-2 | -171413 |
| 3legacy | 1073 | Ueno, Noriyasu (1464) | Won 2-1 | +191432 |
| 4legacy | 1060 | Yasuda, Takaaki (1480) | Lost 1-2 | -171415 |
| 5legacy | 972 | Shibuya, Hikaru (1440) | Lost 0-2 | -181397 |
| top | average opponent: 1491record: 1-4 | new rating: 1397 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 390 | Hase, Yoshimasa (1491) | Lost 1-2 | -181482 |
| 2modern | 474 | Watanabe, Hirokazu (1464) | Lost 1-2 | -181464 |
| 3modern | 612 | Hata, Shinya (1464) | Lost 1-2 | -181446 |
| top | average opponent: 1473record: 0-3 | new rating: 1446 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 288 | Mizuno, Kunihiko (1500) | Lost 1-2 | -181482 |
| 2extended | 316 | Yokoyama, Kazuki (1483) | Won 2-0 | +181500 |
| top | average opponent: 1491record: 1-1 | new rating: 1500 | ||