Promjunyakul, Sarun
Current rating: 1378
Record: 0-7
| Grand Prix Bangkok 2013 (DGM limited) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 77 | Kitirunagsaeng, Amnarj (1500) | Lost 0-2 | -171410 |
| 2sealed | 309 | Surmsri, Teerachai (1484) | Lost 0-2 | -161394 |
| 3sealed | 308 | Rattanasangsathieng, Piya (1529) | Lost 1-2 | -161378 |
| average opponent: 1505record: 0-3 | new rating: 1378 | |||
| Grand Prix Bangkok 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 64 | Chinpitakwatana, Jarup (1500) | Lost 0-2 | -181482 |
| 2sealed | 137 | Wongmuk, Pongsuwan (1416) | Lost 0-2 | -191463 |
| 3sealed | 152 | Kijsintopchai, Eakboot (1463) | Lost 0-2 | -181445 |
| 4sealed | 192 | Sonkkwamcharoen, Jakar (1449) | Lost 0-2 | -181427 |
| average opponent: 1457record: 0-4 | new rating: 1427 | |||