Ma, Chenggong
Current rating: 1519
Record: 5-4
| Grand Prix Beijing 2013 (DGM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 304 | Er, Nan (1500) | Won 2-0 | +181518 |
| 2sealed | 99 | Wilkes, Nat (1483) | Lost 1-2 | -191499 |
| 3sealed | 132 | qin, tianling (1500) | Won 2-1 | +181517 |
| 4sealed | 243 | Shi, Xudian (1536) | Won 2-0 | +191536 |
| 5sealed | 164 | Liu, Zhuoran (1520) | Lost 1-2 | -191517 |
| 6sealed | 133 | Wang, Weiliang (1600) | Lost 0-2 | -161501 |
| 7sealed | 204 | Zhang, Tianyi (1503) | Won 2-1 | +181519 |
| 8sealed | 198 | Jiao, Tu Chen (1520) | Won 2-1 | +181537 |
| 9sealed | 150 | Liu, Xu (1538) | Lost 1-2 | -181519 |
| average opponent: 1522record: 5-4 | new rating: 1519 | |||