Choi, Youjin
Current rating: 1525
Record: 4-3
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 133 | Yamazaki, Hiroaki (1558) | Lost 1-2 | -171483 |
| 2pioneer | 458 | Yokoyama, Dylan (1490) | Won 2-1 | +181501 |
| 3pioneer | 531 | Hase, Hayato (1499) | Won 2-0 | +181519 |
| 4pioneer | 249 | Sugaya, Yuta (1434) | Won 2-0 | +171536 |
| 5pioneer | 165 | Ohshiro, Syusaku (1727) | Lost 0-2 | -151521 |
| 6pioneer | 490 | Terai, Tadayuki (1735) | Won 2-1 | +221543 |
| 7pioneer | 215 | Suganuma, Kouhei (1541) | Lost 1-2 | -181525 |
| average opponent: 1569record: 4-3 | new rating: 1525 | |||