Watanabe, Koji
Current rating: 1419
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 259 | Ito, Katsuaki (1500) | Lost 0-2 | -171440 |
| 2standard | 650 | Nishikawa, Shigeki (1191) | Won 2-0 | +141454 |
| 3standard | 518 | Harumoto, Takashi (1449) | Lost 0-2 | -181436 |
| 4standard | 744 | Magata, Kazuto (1525) | Lost 0-2 | -171419 |
| top | average opponent: 1416record: 1-3 | new rating: 1419 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 683 | Nakamura, Yuu (1455) | Won 2-1 | +191465 |
| 2standard | 526 | Kobayashi, Kazuma (1470) | Lost 0-2 | -181447 |
| 3standard | 880 | Fujita, Kenshiro (1518) | Won 2-0 | +191466 |
| 4standard | 609 | Nishikawa, Haruyoshi (1559) | Won 2-1 | +201486 |
| 5standard | 434 | Seet, Danny (1698) | Won 2-1 | +211507 |
| 6standard | 274 | Uemoto, Takahiro (1619) | Lost 0-2 | -161491 |
| 7standard | 466 | Urano, Shota (1550) | Lost 1-2 | -161475 |
| 8standard | 508 | Matsuoka, Tatsushi (1526) | Lost 1-2 | -181457 |
| top | average opponent: 1549record: 4-4 | new rating: 1457 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 38 | Matsuo, Takanori (1500) | Lost 0-2 | -181482 |
| 2sealed | 307 | Takimoto, Naoya (1468) | Won 2-1 | +181500 |
| 3sealed | 112 | Yasuda, Masayuki (1544) | Lost 0-2 | -171483 |
| 4sealed | 274 | Kaneko, Masayuki (1467) | Lost 0-2 | -191464 |
| 5sealed | 254 | Sakurai, Wataru (1470) | Lost 0-2 | -181446 |
| top | average opponent: 1490record: 1-4 | new rating: 1446 | ||