Park, Hyung Joon
Current rating: 1471
Record: 2-5
| Regional Championships Aichi 2023 (pioneer) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 31 | Von Stange, Alex (1921) | Won 2-0 | +251525 |
| 2pioneer | 34 | Kawasaki, Keita (1766) | Lost 1-2 | -131512 |
| 3pioneer | 38 | Kosaka, Kazune (2169) | Lost 1-2 | -81504 |
| 4pioneer | 98 | Shimizu, Takuma (1438) | Lost 1-2 | -191485 |
| 5pioneer | 86 | Ito, Takuro (1581) | Lost 0-2 | -161469 |
| 6pioneer | 79 | Shinohara, Gen (1518) | Won 2-0 | +181487 |
| 7pioneer | 66 | Kondo, Go (1553) | Lost 0-2 | -161471 |
| average opponent: 1707record: 2-5 | new rating: 1471 | |||