Koyanagi, Yuzo
Current rating: 1498
Record: 3-3
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 35 | Hayashi, Yuhei (1628) | Won 2-0 | +201520 |
| 2pioneer | 100 | Hisano, Mikita (1415) | Won 2-1 | +161536 |
| 3pioneer | 154 | Watanabe, Yuuki (1451) | Lost 0-2 | -191517 |
| 4pioneer | 548 | Sakai, Yasumasa (1350) | Lost 0-2 | -211496 |
| 5pioneer | 534 | Nakajima, Hajime (1503) | Won 2-0 | +181514 |
| 6pioneer | 494 | Miyasaka, Sho (1608) | Lost 1-2 | -161498 |
| average opponent: 1493record: 3-3 | new rating: 1498 | |||