Sundarakalin, Punthorn
Current rating: 1440
| Grand Prix Singapore 2005 (extended) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 15 | Mitsuya, Kazuhiko (1793) | Lost 1-2 | -121432 |
| 5extended | 56 | Teo, Yi Chiang (1636) | Won 2-1 | +211453 |
| 6extended | 24 | Huang, Wen-Liang (1503) | Lost 0-2 | -171436 |
| 7extended | 47 | Chua, Wei Xiang (1525) | Lost 0-2 | -161420 |
| 8extended | 86 | Gwee, Hong Kiat Kenneth (1519) | Won 2-0 | +201440 |
| top | average opponent: 1595record: 2-3 | new rating: 1440 | ||
| Grand Prix Kuala Lumpur 2004 (5DN standard) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 29 | Kim, Cynic (1506) | Won 2-0 | +191488 |
| 5standard | 7 | Oiso, Masashi (2022) | Lost 0-2 | -101478 |
| 6standard | 35 | Thio, Russell (1508) | Lost 1-2 | -171461 |
| 7standard | 40 | Yow, Kar Leng (1503) | Lost 1-2 | -171444 |
| top | average opponent: 1635record: 1-3 | new rating: 1444 | ||
| Grand Prix Bangkok 2003 (SCG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 18 | Techarattanaprasert, Mongkol (1607) | Lost 0-2 | -161484 |
| 5standard | 47 | Assavalapsakul, Weerachai (1536) | Lost 1-2 | -171467 |
| 6standard | 52 | Pratummanee, Patrick (1522) | Lost 1-2 | -171450 |
| 7standard | 66 | Taksana, Watee (1501) | Won 2-0 | +191469 |
| top | average opponent: 1541record: 1-3 | new rating: 1469 | ||