Song, Jiajun
Current rating: 1470
Record: 5-7-1
| Regional Championships Tianjin 2023 (pioneer) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 103 | Hong, Kai (1484) | Lost 1-2 | -191488 |
| 2pioneer | 92 | Li, Changjin (1481) | Lost 1-2 | -181470 |
| top | average opponent: 1482record: 0-2 | new rating: 1470 | ||
| Regional Championships Shanghai 2023 (pioneer) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 50 | Li, Aiden (1500) | Lost 1-2 | -191508 |
| 2pioneer | 68 | Yang, Yijiang (1431) | Lost 1-2 | -191489 |
| 3pioneer | 75 | wenyu, guo (1468) | Won 2-1 | +181507 |
| top | average opponent: 1466record: 1-2 | new rating: 1507 | ||
| Regional Championships Beijing 2023 (ONE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 26 | Tai, Xiaoyao (1495) | Won 2-1 | +181518 |
| 2standard | 11 | Yan, Gan (1870) | Won 2-1 | +241542 |
| 3standard | 5 | Li, Yi Hao (1536) | Lost 0-2 | -181524 |
| 4standard | 19 | Deng, Jun (1500) | Lost 0-2 | -181506 |
| 5standard | 28 | Song, Xiangxue (1712) | Lost 1-2 | -151491 |
| 6standard | 51 | Zhang, Haoyang (1492) | Won 2-1 | +181509 |
| 7standard | 37 | Chen, Liang [CHN] (1511) | Draw 1-1 | 01509 |
| 8standard | 35 | Zhang, Chao (1485) | Won 2-1 | +181527 |
| top | average opponent: 1575record: 4-3-1 | new rating: 1527 | ||