Hong, Seung-Oh
Current rating: 1511
Record: 26-30
| Grand Prix Hong Kong 2018 (modern) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 173 | Ng, Ping-Sum (1519) | Won 2-1 | +181533 |
| 3modern | 49 | Zhang, Li (1509) | Lost 0-2 | -191514 |
| 4modern | 133 | Tong, Christopher (1791) | Lost 1-2 | -131501 |
| 5modern | 313 | Wang, Dengnan (1524) | Lost 1-2 | -171484 |
| 6modern | 322 | Leow, Ming Yi (1573) | Won 2-1 | +191503 |
| 7modern | 234 | Raj, Kaysen (1504) | Won 2-0 | +181521 |
| 8modern | 173 | Zhi, Yimin (1988) | Lost 1-2 | -101511 |
| top | average opponent: 1630record: 3-4 | new rating: 1511 | ||
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1471 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 57 | Wang, Wei (1381) | Won 2-1 | +161487 |
| 2sealed | 4 | Yu, Hanyang (1517) | Lost 1-2 | -171470 |
| 3sealed | 301 | Kang, Yameng (1384) | Lost 0-2 | -201450 |
| 4sealed | 328 | Yarnall, Bailey (1483) | Won 2-1 | +191469 |
| 5sealed | 238 | Zhong, Jian (1712) | Won 2-1 | +221491 |
| 6sealed | 252 | Wu, Jiasheng (1568) | Lost 1-2 | -161475 |
| 7sealed | 284 | Zuo, Cheng (1717) | Won 2-0 | +221497 |
| 8sealed | 200 | Qiao, Zi (1480) | Won 2-1 | +181515 |
| top | average opponent: 1530record: 5-3 | new rating: 1515 | ||
| Grand Prix Singapore 2017 (XLN limited) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 70 | Gleeson-Payne, Toby (1500) | Won 2-0 | +181520 |
| 2sealed | 35 | Yap, Jason (1868) | Lost 0-2 | -121508 |
| 3sealed | 176 | Zhou, Youcai (1502) | Lost 1-2 | -181490 |
| 4sealed | 224 | Kurniadi, William (1485) | Lost 0-2 | -181472 |
| 5sealed | 241 | Rian, Rianto (1467) | Won 2-0 | +181490 |
| 6sealed | 187 | Yow, Kar Leng (1460) | Lost 0-2 | -191471 |
| top | average opponent: 1547record: 2-4 | new rating: 1471 | ||
| Grand Prix Kuala Lumpur 2016 (KLD standard) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 173 | Sadangrit, Nutdanai (1521) | Won 0-0 | +191497 |
| 4standard | 34 | Camangon, Gerald (1945) | Lost 0-2 | -101487 |
| 5standard | 72 | Chaovarindr, Thirawat (1554) | Lost 1-2 | -171470 |
| 6standard | 178 | Li, Maxwell (1672) | Won 2-1 | +211491 |
| 7standard | 99 | Loke, Hau Chun (1543) | Lost 1-2 | -171474 |
| 8standard | 148 | Hee, Chung Wye (1432) | Won 2-0 | +181492 |
| 9standard | 98 | Lim, Fu Kang (1508) | Won 2-0 | +181510 |
| 10standard | 98 | Wong, Tong Wee (1532) | Won 2-1 | +181528 |
| 11standard | 45 | Uzair, Faruqi (1655) | Lost 0-2 | -151513 |
| 12standard | 62 | Takao, Shota (1925) | Lost 1-2 | -111502 |
| top | average opponent: 1629record: 5-5 | new rating: 1502 | ||
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 7 | Yang, Shuang (1413) | Lost 1-2 | -201513 |
| 2sealed | 181 | An, Mingxiao (1481) | Lost 0-2 | -181495 |
| 3sealed | 401 | Yap, Teng Chiong (1582) | Lost 0-2 | -171478 |
| top | average opponent: 1492record: 0-3 | new rating: 1478 | ||
| Grand Prix Manila 2015 (KTK standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 307 | Mallar, William (1521) | Won 2-1 | +191500 |
| 3standard | 94 | Ybanez, Alphonse (1639) | Won 2-1 | +211521 |
| 4standard | 73 | Pangilinan, Aurelio (1629) | Won 2-0 | +201541 |
| 5standard | 50 | Oca, Ramon Allan (1583) | Won 2-0 | +181559 |
| 6standard | 3 | Lee, Dongkyu (1616) | Won 2-1 | +191578 |
| 7standard | 12 | Mihara, Makihito (2018) | Lost 0-2 | -101568 |
| 8standard | 43 | Tan, Jimmy G (1616) | Lost 1-2 | -171551 |
| 9standard | 92 | Dimalanta, Franz Angelo (1576) | Lost 0-2 | -181533 |
| top | average opponent: 1650record: 5-3 | new rating: 1533 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 41 | Oikawa, Hakudou (1535) | Won 2-0 | +191508 |
| 4sealed | 52 | Tanaka, Keita (1557) | Won 2-0 | +191527 |
| 5sealed | 25 | Nakamura, Yusuke (1716) | Lost 1-2 | -151512 |
| 6sealed | 28 | Ishiyama, Takahiro (1520) | Lost 1-2 | -181494 |
| 7sealed | 163 | Kubouchi, Naoki (1778) | Lost 1-2 | -131481 |
| 8sealed | 144 | Matsumoto(ishikawa), T (1503) | Won 2-1 | +191500 |
| 9sealed | 122 | Sakai, Yoshiki (1482) | Lost 1-2 | -191481 |
| top | average opponent: 1585record: 3-4 | new rating: 1481 | ||
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 82 | Matsumoto, Shou (1645) | Lost 0-2 | -151485 |
| 4sealed | 294 | Li, Hang (1501) | Lost 0-2 | -181467 |
| 5sealed | 264 | Chan, Augustin (1513) | Won 2-0 | +191486 |
| 6sealed | 221 | Zhao, Yue (1555) | Lost 1-2 | -171469 |
| 7sealed | 255 | Fang, Le (1439) | Won 2-0 | +171486 |
| 8sealed | 185 | Lou, Mengyang (1517) | Won 2-1 | +191505 |
| 9sealed | 150 | Li, Chi (1615) | Lost 1-2 | -161489 |
| top | average opponent: 1541record: 3-4 | new rating: 1489 | ||