Cheng, Sean
Current rating: 1468
Record: 6-8
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 50 | Loi, Lys (1500) | Won 2-1 | +191502 |
| 2sealed | 166 | Ji, Yimin (1518) | Lost 1-2 | -181484 |
| 3sealed | 229 | Kwan, William (1494) | Lost 0-2 | -181466 |
| 4sealed | 369 | Hong, Sophie (1466) | Won 2-0 | +181484 |
| 5sealed | 242 | Lee, Seungho (1466) | Lost 0-2 | -181466 |
| 6sealed | 287 | Liu, Haoyu (1442) | Won 2-1 | +181484 |
| 7sealed | 233 | Wang, Da (1615) | Lost 0-2 | -161468 |
| average opponent: 1500record: 3-4 | new rating: 1468 | |||
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 151 | Nakajima, Gou (1525) | Lost 1-2 | -181482 |
| 2sealed | 211 | Kawazoe, Keiichi (1461) | Lost 0-2 | -181464 |
| 3sealed | 375 | Muralitheran, Hari (1326) | Lost 1-2 | -201444 |
| 4sealed | 402 | Wong, Chun Ping (1467) | Won 2-0 | +181462 |
| 5sealed | 358 | Masaga, Von (1463) | Won 2-0 | +181480 |
| 6sealed | 335 | Chan, Tak Kin Kent (1487) | Won 2-0 | +181498 |
| 7sealed | 288 | Tsukahara, Kazuto (1685) | Lost 1-2 | -151483 |
| average opponent: 1488record: 3-4 | new rating: 1483 | |||