Watanabe, Kohei
Current rating: 1521
Record: 4-3
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 7 | Okano, Yukimasa (1567) | Won 2-0 | +191519 |
| 2pioneer | 91 | Mukai, Koudai (1524) | Won 2-1 | +181537 |
| 3pioneer | 259 | Nishizawa, Taichi (1586) | Won 2-1 | +191556 |
| 4pioneer | 13 | Hayamizu, Akira (1450) | Won 2-0 | +161572 |
| 5pioneer | 81 | Takao, Naoki (1668) | Lost 0-2 | -161556 |
| 6pioneer | 178 | Fujii, Yuusaku (1460) | Lost 0-2 | -201536 |
| 7pioneer | 199 | Nishimura, Takashi 6132 (1672) | Lost 1-2 | -151521 |
| average opponent: 1561record: 4-3 | new rating: 1521 | |||