Yoo, Jaejoon
Current rating: 1499
Record: 5-6
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 410 | Takahashi, Osamu (1549) | Won 2-1 | +191525 |
| 3sealed | 502 | Karwoski, Andy (1628) | Lost 1-2 | -161509 |
| 4sealed | 299 | Song, Shang (1618) | Won 2-1 | +201529 |
| 5sealed | 229 | Saeki, Katsuhisa (1903) | Lost 1-2 | -121517 |
| 6sealed | 453 | Matsuki, Ryusuke (1521) | Lost 0-2 | -181499 |
| average opponent: 1644record: 2-3 | new rating: 1499 | |||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 602 | Wang, Weiliang (1576) | Lost 0-2 | -171483 |
| 3standard | 835 | Kobayashi, Ryosuke (1523) | Won 2-0 | +191502 |
| 4standard | 757 | Nagase, Iori (1502) | Won 2-0 | +181520 |
| 5standard | 305 | Abcouwer, Friso (1730) | Won 2-0 | +221542 |
| 6standard | 247 | Fujita, Toshitake (1469) | Lost 0-2 | -191523 |
| 7standard | 471 | Fujiyoshi, Manabu (1597) | Lost 0-2 | -171506 |
| average opponent: 1566record: 3-3 | new rating: 1506 | |||