Sun, Jiafeng
Current rating: 1508
Record: 11-12-2 (GP) / 4-7 (professional)
| Grand Prix Shanghai 2011 (M12 limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 19 | Nonaka, Kentarou (1831) | Lost 1-2 | -121475 |
| 5sealed | 90 | Li, Zhe (1536) | Won 2-0 | +191494 |
| 6sealed | 41 | Lee, Shi Tian (1790) | Lost 0-2 | -131481 |
| 7sealed | 82 | Qiao, Cheng (1491) | Won 2-1 | +181499 |
| 8sealed | 47 | Yan, Kung L (1551) | Won 2-0 | +191518 |
| 9sealed | 33 | Jaklovsky, Lukas (1974) | Lost 0-2 | -101508 |
| top | average opponent: 1695record: 3-3 | new rating: 1508 | ||
| Pro Tour Honolulu 2009 (Alara block) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 69 | Borba, Rodrigo (1785) | Lost 0-2 | -131468 |
| 2block | 123 | Fortier, Remi (1760) | Won 2-1 | +231491 |
| 3block | 102 | Maisonneuve, Erwan (1538) | Won 2-0 | +191510 |
| 4block | 29 | van Medevoort, Robert (2005) | Lost 1-2 | -101500 |
| 5block | 100 | Pini, Francesco (1577) | Won 2-1 | +201520 |
| 6draft | 115 | Cirujales, Earl (1599) | Lost 0-2 | -171503 |
| 7draft | 30 | Sadin, Steven (1584) | Lost 0-2 | -161487 |
| top | average opponent: 1693record: 3-4 | new rating: 1487 | ||
| Pro Tour Kuala Lumpur 2008 (MOR draft) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 152 | Rico Bleda, Alejandro (1517) | Lost 1-2 | -171486 |
| 2draft | 139 | Fujita, Osamu (1919) | Lost 1-2 | -111475 |
| 3draft | 135 | Morrison, Andrew (1465) | Won 0-0 | +181493 |
| 4draft | 164 | Summersberger, Helmut (1823) | Lost 0-2 | -121481 |
| top | average opponent: 1681record: 1-3 | new rating: 1481 | ||
| Grand Prix Manila 2006 (GPT limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 68 | Delfino, Dio Alexander (1548) | Draw 1-1 | +11483 |
| 3sealed | 45 | Rivero, Roy Raymund (1518) | Won 2-0 | +191502 |
| 4sealed | 33 | Quiray, Ron Oliver (1500) | Lost 0-2 | -181484 |
| 5sealed | 72 | Mananzan, Pio Lorenzo (1518) | Won 2-1 | +181502 |
| 6sealed | 39 | Dacasin, Jefferson E (1536) | Lost 0-2 | -171485 |
| 7sealed | 66 | Tan, Alzandy Uy (1518) | Won 2-0 | +181503 |
| top | average opponent: 1523record: 3-2-1 | new rating: 1503 | ||
| Grand Prix Singapore 2005 (extended) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 84 | Weng, Rong Can (1500) | Draw 1-1 | +21416 |
| 2extended | 79 | Shimoji, Ai (1571) | Lost 1-2 | -151401 |
| 3extended | 125 | Goh, Chris Si Wei (1482) | Lost 1-2 | -171384 |
| 4extended | 173 | Neo, Daniel (1463) | Won 2-0 | +201404 |
| 5extended | 151 | Dwiputra, Arifirawan (1482) | Won 2-1 | +191423 |
| 6extended | 121 | Piamrasri, Chomron (1500) | Won 2-1 | +201443 |
| 7extended | 90 | Yang, Joshua (1591) | Won 2-0 | +201463 |
| 8extended | 67 | Kong, Yeunjin (1492) | Won 2-1 | +191482 |
| top | average opponent: 1510record: 5-2-1 | new rating: 1482 | ||
| Grand Prix Hong Kong 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 7 | Chow, Yiu Hung (1530) | Lost 0-2 | -171483 |
| 5sealed | 52 | Yan, Heng (1541) | Lost 0-0 | -171466 |
| 6sealed | 65 | Kim, Cynic (1571) | Lost 0-2 | -161450 |
| 7sealed | 71 | Chan, Sze Hang (1500) | Lost 0-2 | -181432 |
| 8sealed | 77 | Gan, Forest (1431) | Lost 1-2 | -181414 |
| top | average opponent: 1515record: 0-5 | new rating: 1414 | ||