Yiu, Ching Tak
Current rating: 1435
Record: 5-9
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 164 | Chu, Louis (1461) | Lost 1-2 | -181466 |
| 2sealed | 245 | Wu, Kon Fai (1608) | Lost 1-2 | -151451 |
| 3sealed | 393 | Tang, Wing Chung (1452) | Won 2-0 | +181469 |
| 4sealed | 336 | Mackley, James (1484) | Lost 1-2 | -181451 |
| 5sealed | 352 | Yan, Yan (1555) | Lost 1-2 | -161435 |
| average opponent: 1512record: 1-4 | new rating: 1435 | |||
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 80 | Fong, Alan (1500) | Lost 0-2 | -181482 |
| 2sealed | 291 | Cheung, Wing Vincent (1485) | Won 2-0 | +181500 |
| 3sealed | 302 | Ngan, Wing Ming (1423) | Won 2-0 | +171517 |
| 4sealed | 235 | Sato, Rei (1687) | Lost 1-2 | -151502 |
| 5sealed | 231 | To, Julian (1509) | Won 2-0 | +181520 |
| 6sealed | 152 | Zhang, Meng (1498) | Lost 1-2 | -191501 |
| 7sealed | 268 | Domingo, Wilfred Halco (1455) | Won 2-0 | +181519 |
| 8sealed | 216 | Neo, Alvin (1646) | Lost 0-2 | -161503 |
| 9sealed | 220 | Zeng, Zhe (1474) | Lost 0-2 | -191484 |
| average opponent: 1520record: 4-5 | new rating: 1484 | |||