Ritthirak, Sanmonchai
Current rating: 1500
| Grand Prix Bangkok 2009 (M10 limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 8 | Rattana, Sukanya (1500) | Lost 1-2 | -171455 |
| 2sealed | 103 | Adulyanubhap, Ramil (1412) | Won 2-0 | +171472 |
| 3sealed | 107 | chutrakul, jutipong (1500) | Won 2-1 | +181490 |
| 4sealed | 107 | Phanavechgitgoon, Tham (1519) | Won 2-0 | +191509 |
| 5sealed | 62 | Likisuliya, Sumphan (1465) | Won 2-0 | +171526 |
| 6sealed | 31 | Lim, Swee Weng (1514) | Won 2-0 | +181544 |
| 7sealed | 38 | Tan, Xing Yong (1556) | Won 2-0 | +181562 |
| 8sealed | 6 | Nakajima, Chikara (1823) | Lost 1-2 | -131549 |
| 9draft | 37 | Soh, Terry (1753) | Lost 0-2 | -141535 |
| 11draft | 22 | Jing, Yihao (1526) | Won 2-0 | +171552 |
| 12draft | 24 | Kozakai, Yukio (1521) | Lost 0-2 | -181534 |
| 13draft | 47 | Teeradechsakul, Teerachai (1597) | Lost 1-2 | -171517 |
| 14draft | 33 | Phanpakorn, Dolpipop (1577) | Lost 1-2 | -171500 |
| top | average opponent: 1559record: 7-6 | new rating: 1500 | ||
| Grand Prix Bangkok 2003 (SCG standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 9 | Subcharoen, Jakguy (1500) | Won 2-0 | +191465 |
| 2standard | 23 | Suwansunthorn, Pluet (1554) | Lost 1-2 | -171448 |
| 3standard | 66 | Taksana, Watee (1502) | Won 2-0 | +191467 |
| 4standard | 53 | Jirapinyo, Araya (1518) | Lost 0-2 | -171450 |
| 5standard | 79 | Treeyarak, Chanon (1465) | Won 2-1 | +181468 |
| 6standard | 44 | Pornpisutthiworakul, Thinnakorn (1519) | Won 2-0 | +191487 |
| 7standard | 32 | Mitsuhashi, Takashi (1646) | Lost 0-2 | -151472 |
| top | average opponent: 1529record: 4-3 | new rating: 1472 | ||
| Grand Prix Singapore 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 37 | Ahamad Kamal, Ahmad Omar (1499) | Lost 0-2 | -181482 |
| 2extended | 58 | Siew, Wei Quan (1464) | Lost 0-2 | -181464 |
| 3extended | 71 | Lim, Yang Zhi (1464) | Lost 0-1 | -181446 |
| top | average opponent: 1476record: 0-3 | new rating: 1446 | ||