Tang, Haifeng
Current rating: 1447
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 642 | Teshima, Hisanori (1475) | Lost 0-2 | -181456 |
| 2sealed | 826 | Saeki, Katsuhisa (1865) | Lost 0-2 | -111445 |
| 3sealed | 1070 | Furukawa, Syun6268 (1368) | Won 2-0 | +171462 |
| 4sealed | 797 | Kawamura, Yusaku (1622) | Lost 1-2 | -151447 |
| top | average opponent: 1583record: 1-3 | new rating: 1447 | ||
| Grand Prix Hong Kong 2018 (modern) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 228 | Zhou, Ziyang (1500) | Won 2-0 | +181494 |
| 2modern | 78 | Liu, Haoyu (1382) | Lost 0-2 | -201474 |
| top | average opponent: 1441record: 1-1 | new rating: 1474 | ||
| Grand Prix Hong Kong 2017 (XLN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 36 | Li, Duoyan (1681) | Lost 1-2 | -151485 |
| 2sealed | 170 | Wu, Hao (1799) | Lost 0-2 | -121473 |
| 3sealed | 328 | Maclean, Douglas (1465) | Lost 0-2 | -181455 |
| 4sealed | 333 | Chan, Augustin (1433) | Won 2-1 | +171472 |
| 5sealed | 328 | Huang, Jan (1645) | Won 2-1 | +211493 |
| 6sealed | 271 | Liu, Chun Yuan (1515) | Lost 1-2 | -171476 |
| top | average opponent: 1590record: 2-4 | new rating: 1476 | ||