Sum, Cho Tak
Current rating: 1484
Record: 3-4
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 67 | Wu, Songwei (1711) | Lost 0-2 | -141486 |
| 2sealed | 67 | Hermosilla, Alfred Martin (1512) | Lost 0-2 | -181468 |
| 3sealed | 67 | Wong, Wai Hung Ray (1463) | Lost 0-2 | -181450 |
| 4sealed | 67 | Pan, Guorong (1445) | Won 2-0 | +181468 |
| 5sealed | 67 | Lin, Yonghao (1411) | Won 2-0 | +171485 |
| 6sealed | 67 | Vallesteros, Xezur (1485) | Won 2-1 | +181503 |
| 7sealed | 67 | Wu, Di (1456) | Lost 0-2 | -191484 |
| average opponent: 1497record: 3-4 | new rating: 1484 | |||