Prathomthanapongs, Sir
Current rating: 1517
Record: 6-5-3
| Grand Prix Bangkok 2013 (DGM limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 81 | Hashim, Mohammed Fauzi (1500) | Draw 1-1 | 01521 |
| 2sealed | 203 | Chua, Yuan Loong Brian (1501) | Won 2-0 | +181539 |
| 3sealed | 126 | Yupanondh, Peeraporn (1425) | Draw 1-1 | -21537 |
| 4sealed | 251 | Li, Qing (1523) | Won 1-0 | +171554 |
| 5sealed | 182 | Pipattansai, Keerati (1540) | Lost 0-2 | -181536 |
| 6sealed | 216 | Koh, Hui Cheong Kent (1469) | Lost 0-2 | -191517 |
| average opponent: 1493record: 2-2-2 | new rating: 1517 | |||
| Grand Prix Bangkok 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Paitoonseksit, Kong (1519) | Lost 1-2 | -181482 |
| 2sealed | 81 | Lilatwattana, Sorot (1482) | Lost 0-2 | -181464 |
| 3sealed | 108 | Lee, Simon [HKG] (1464) | Won 2-0 | +181482 |
| 4sealed | 125 | Wong, Nicholas Jonathan (1642) | Draw 1-1 | +31485 |
| 5sealed | 125 | Lim, Jia De (1484) | Lost 0-2 | -181467 |
| 6sealed | 126 | Pandee, Nuttawat (1464) | Won 2-0 | +181485 |
| 7sealed | 103 | Suwannoi, Weerawat (1485) | Won 2-0 | +181503 |
| 8sealed | 83 | Lim, Keat Long (1520) | Won 2-0 | +181521 |
| average opponent: 1507record: 4-3-1 | new rating: 1521 | |||