Tsukadaira, Kouki
Current rating: 1457
Record: 3-5
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 233 | Yamada, Yoshitaka (1447) | Lost 0-2 | -191481 |
| 2pioneer | 578 | Tse, Cloudy (1451) | Lost 0-2 | -191462 |
| 3pioneer | 813 | Watanabe, Masashi (1530) | Lost 0-2 | -161446 |
| 4pioneer | 784 | Yanase, Ryo (1447) | Lost 1-2 | -181428 |
| 5pioneer | 741 | Hirose, Daichi (1292) | Won 2-0 | +151443 |
| 6pioneer | 652 | Aruga, Masakazu (1446) | Won 2-0 | +181461 |
| 7pioneer | 533 | Choi, Minseok (1272) | Won 2-0 | +151476 |
| 8pioneer | 403 | Sato, Yuki (1423) | Lost 0-2 | -191457 |
| average opponent: 1414record: 3-5 | new rating: 1457 | |||