Guo, Chengxin
Current rating: 1440
Record: 3-7
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 177 | Li, Yun Cong (1505) | Lost 0-2 | -181454 |
| 2sealed | 287 | Zhang, Ankun (1481) | Won 2-1 | +191473 |
| 3sealed | 279 | Wei, Mengyi (1545) | Lost 1-2 | -171456 |
| 4sealed | 400 | Yin, Hongrui (1566) | Lost 1-2 | -161440 |
| average opponent: 1524record: 1-3 | new rating: 1440 | |||
| Grand Prix Hong Kong 2017 (XLN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 144 | Leong, Yongbo (1500) | Won 2-1 | +181518 |
| 2sealed | 99 | Yoshii, Takayuki (1523) | Lost 1-2 | -181500 |
| 3sealed | 240 | Ng, Onicle (1502) | Won 2-1 | +181518 |
| 4sealed | 191 | Matsumoto, Yuki2978 (1959) | Lost 0-2 | -101508 |
| 5sealed | 183 | Takasugi, Tomoki (1440) | Lost 0-2 | -201488 |
| 6sealed | 247 | Chan, Ming Kin (1561) | Lost 1-2 | -161472 |
| average opponent: 1581record: 2-4 | new rating: 1472 | |||