Lerdtummatragule, Chaichana
Current rating: 1590
Record: 41-35-2
| Grand Prix Bangkok 2019 (ELD limited) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 224 | Effendi, Yopi (1399) | Draw 1-1 | -31591 |
| 2sealed | 173 | Wu, Songwei (1695) | Won 2-1 | +201611 |
| 3sealed | 204 | Li, Mo (1439) | Lost 1-2 | -211590 |
| top | average opponent: 1511record: 1-1-1 | new rating: 1590 | ||
| Grand Prix Singapore 2017 (XLN limited) | starting rating: 1586 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 66 | Leong, Jiti (1631) | Lost 1-2 | -171569 |
| 2sealed | 146 | Khong, Louis (1407) | Won 2-0 | +151584 |
| 3sealed | 154 | Cheng, Tung-Yi (1794) | Won 2-0 | +221606 |
| 4sealed | 124 | Yong, Kuo Fung (1671) | Lost 0-2 | -171589 |
| 5sealed | 164 | Chua, Lowell Jun Ming (1694) | Won 2-1 | +201609 |
| 6sealed | 150 | Hakim, Bob (1361) | Won 2-0 | +141623 |
| 7sealed | 75 | Mahendran, Nikhilesh (1487) | Won 2-0 | +151638 |
| 8sealed | 54 | Ju, Yaqiong (1701) | Won 2-1 | +191657 |
| 9sealed | 24 | Wu, Yanfei (1585) | Won 2-1 | +171674 |
| 10draft | 51 | Lin, Ruizi (1943) | Lost 1-2 | -131661 |
| 11draft | 89 | Lee, Link (1623) | Lost 0-2 | -191642 |
| 12draft | 87 | Pornpromlikit, Ekapong (1618) | Lost 0-2 | -181624 |
| 13draft | 73 | Yap, Jason (1833) | Lost 0-2 | -151609 |
| 15draft | 45 | Tan, Chin Heng (1784) | Lost 0-2 | -151594 |
| top | average opponent: 1652record: 7-7 | new rating: 1594 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 399 | Hashimoto, Hiromune (1500) | Won 2-0 | +171554 |
| 2sealed | 117 | Ogawa, Daiki (1523) | Won 2-1 | +171571 |
| 3sealed | 175 | Deguchi, Koya (1551) | Lost 1-2 | -181553 |
| 4sealed | 671 | Yoshihara, Shinji (1461) | Won 2-0 | +161569 |
| 5sealed | 329 | Urasawa, Taiji (1643) | Draw 1-1 | +21571 |
| 6sealed | 352 | Miyamoto, Yutaro (1527) | Won 2-0 | +171588 |
| 7sealed | 216 | Muranaka, Hiroya (1653) | Won 2-1 | +191607 |
| 8sealed | 135 | Nomura, Takeshi (1413) | Won 2-0 | +141621 |
| 9sealed | 71 | Sugiura, Hiroki (1607) | Won 2-1 | +181639 |
| 10draft | 219 | Hasegawa, Kazuhiko (1672) | Lost 0-2 | -171622 |
| 11draft | 332 | Tanaka, Tomoya (1642) | Lost 1-2 | -181604 |
| 13draft | 314 | Yokoyama, Jun'ichi (1605) | Lost 0-2 | -181586 |
| top | average opponent: 1566record: 7-4-1 | new rating: 1586 | ||
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 229 | Yang, Mingjun (1470) | Lost 1-2 | -191521 |
| 2sealed | 185 | Aquende, John Robert (1600) | Won 2-0 | +191540 |
| 3sealed | 263 | Hu, Jinancheng (1482) | Lost 0-2 | -191521 |
| 4sealed | 305 | Dengqing, Boey (1470) | Won 2-1 | +171538 |
| 5sealed | 223 | Ang, Jorrell (1500) | Won 2-1 | +181556 |
| 6sealed | 254 | Chinxi, Wan (1491) | Lost 0-2 | -191537 |
| top | average opponent: 1502record: 3-3 | new rating: 1537 | ||
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 187 | Chan, Chor King (1518) | Lost 0-2 | -181541 |
| 3sealed | 323 | Kam, Wing Kan (1500) | Lost 0-2 | -191522 |
| 4sealed | 358 | Wong, Tin Yau (1525) | Won 2-1 | +181540 |
| 5sealed | 263 | Yau, Ching Man (1499) | Won 2-0 | +171557 |
| 6sealed | 171 | Wang, Ming Chih (1619) | Lost 1-2 | -171540 |
| top | average opponent: 1532record: 2-3 | new rating: 1540 | ||
| Grand Prix Bangkok 2013 (DGM limited) | starting rating: 1549 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 72 | Wongngamrungroj, Samri (1500) | Lost 1-2 | -191530 |
| 2sealed | 252 | Adikoesoemo, Austein (1449) | Won 2-0 | +161546 |
| 3sealed | 206 | Prangchan, Ukrit (1500) | Lost 0-2 | -191527 |
| 4sealed | 299 | Tan Jia Wei, Bjorn (1482) | Won 2-0 | +181545 |
| 5sealed | 287 | Praiwan, Thanakorn (1437) | Won 2-1 | +161561 |
| 6sealed | 206 | Napapong, Wudthipan (1524) | Lost 1-2 | -191542 |
| 7sealed | 200 | Villar, Rey (1594) | Won 2-1 | +191561 |
| 8sealed | 154 | Lau, Wilfred (1514) | Lost 0-2 | -191542 |
| 9sealed | 174 | Kijsintopchai, Eakboot (1499) | Won 2-0 | +171559 |
| top | average opponent: 1500record: 5-4 | new rating: 1559 | ||
| Grand Prix Shanghai 2012 (M13 limited) | starting rating: 1586 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 92 | Li, Duoyan (1553) | Lost 0-2 | -181568 |
| 5sealed | 98 | Gu, Fengwen (1486) | Lost 1-2 | -201548 |
| 6sealed | 131 | Jin, Shangqiong (1516) | Won 2-0 | +181566 |
| 7sealed | 104 | Wang, Xuan-ji (1675) | Lost 1-2 | -161550 |
| 8sealed | 145 | Liu, Jiayi (1518) | Won 2-0 | +171567 |
| 9sealed | 98 | Gong, Fang (1550) | Lost 1-2 | -181549 |
| top | average opponent: 1550record: 2-4 | new rating: 1549 | ||
| Grand Prix Bangkok 2009 (M10 limited) | starting rating: 1557 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 92 | Cher, Chin Wee (1415) | Won 2-1 | +151572 |
| 2sealed | 80 | Poh, Ming Jie Audric (1472) | Lost 1-2 | -201552 |
| 3sealed | 90 | aimwuttana, pin (1502) | Won 2-0 | +171569 |
| 4sealed | 108 | Wangsoparak, Siripong (1499) | Won 2-1 | +171586 |
| 5sealed | 51 | Vicheanpant, Chitaworn (1504) | Won 2-1 | +171603 |
| 6sealed | 63 | Techarattanaprasert, Mongkol (1795) | Lost 1-2 | -151588 |
| 7sealed | 53 | Foo, Wen Han (1519) | Won 2-1 | +171605 |
| 8sealed | 66 | Phanpakorn, Dolpipop (1579) | Lost 1-2 | -191586 |
| top | average opponent: 1536record: 5-3 | new rating: 1586 | ||
| Grand Prix Bangkok 2007 (LRW limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 3 | Rangsikanbhum, Sira (1500) | Won 2-1 | +171534 |
| 2sealed | 4 | Thepavan, Chaiyathep (1518) | Won 2-0 | +181552 |
| 3sealed | 15 | Phanchaicharoen, Viroj (1572) | Lost 0-2 | -171535 |
| 4sealed | 80 | Ponlasint, Suntee (1487) | Lost 1-2 | -191516 |
| 5sealed | 106 | Liew, Hao Dong (1425) | Won 2-1 | +161532 |
| 6sealed | 75 | Suksa-Ngueam, Chinabut (1500) | Won 2-0 | +171549 |
| 7sealed | 70 | Komuro, Shuu (1785) | Won 2-1 | +231572 |
| 8sealed | 39 | Edel, Willy (1735) | Lost 0-2 | -151557 |
| top | average opponent: 1565record: 5-3 | new rating: 1557 | ||
| Grand Prix Bangkok 2003 (SCG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 11 | Sangunwong, Sakarin (1500) | Won 2-0 | +181518 |
| 2standard | 34 | Sutthisakorn, Channarong (1537) | Won 2-1 | +181536 |
| 3standard | 23 | Wong, Chung Yuan Adrian (1518) | Lost 0-2 | -181518 |
| 4standard | 70 | Xu, Liang (1483) | Lost 0-2 | -191499 |
| 5standard | 81 | Singgaw, Gorrakot Golf (1484) | Won 2-0 | +181517 |
| 6standard | 58 | Cheepchon, Kullachet (1521) | Lost 0-2 | -181499 |
| 7standard | 83 | Cheah, Chuen Sheong (1476) | Won 2-0 | +181517 |
| top | average opponent: 1503record: 4-3 | new rating: 1517 | ||