Oh, Young Seok
Current rating: 1688
Record: 62-51-3
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1671 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 391 | Ito, Wataru (1551) | Won 2-1 | +161687 |
| 3sealed | 196 | Takagi, Yuma (1644) | Won 2-1 | +171704 |
| 4sealed | 148 | Agemura, Shota (1483) | Won 2-1 | +141718 |
| 5sealed | 43 | Ishizaki, Yoshiki (1716) | Lost 0-2 | -181700 |
| 6sealed | 302 | Arahori, Kazuaki (1456) | Won 2-1 | +141714 |
| 7sealed | 57 | Obitsu, Youtarou (1799) | Lost 0-2 | -171697 |
| 8sealed | 231 | Okuda, Masateru (1538) | Won 2-0 | +161713 |
| 9sealed | 220 | Lee, Ji-Hyun (1579) | Won 2-1 | +151728 |
| 10draft | 156 | Ikeda, Takahiro (1772) | Lost 1-2 | -171711 |
| 11draft | 177 | Hoyou, Syunnki (1515) | Draw 1-1 | -41707 |
| 13draft | 118 | Kobayashi, Tatsuumi (1930) | Lost 1-2 | -141693 |
| 14draft | 101 | Sawatari, Kai (1614) | Won 2-1 | +171710 |
| 15draft | 89 | Wu, Yanfei (1512) | Lost 1-2 | -221688 |
| top | average opponent: 1624record: 7-5-1 | new rating: 1688 | ||
| Grand Prix Taipei 2019 (WAR standard) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 60 | Wang, Wei Di (1448) | Won 2-1 | +161559 |
| 3standard | 243 | Su, Yuwen (1496) | Won 2-0 | +171576 |
| 4standard | 81 | Ishihara, Jun (1784) | Won 2-0 | +221598 |
| 5standard | 7 | Morofuji, Takuma (2120) | Won 2-0 | +271625 |
| 6standard | 25 | Huang, Yung-Ling (1704) | Won 2-1 | +191644 |
| 7standard | 4 | Ogasawara, Tomoaki (1732) | Won 2-1 | +201664 |
| 8standard | 8 | Kim, Seok Hyun (1601) | Lost 1-2 | -201644 |
| 9standard | 16 | Wakita, Tomoyuki (1821) | Lost 1-2 | -141630 |
| 10standard | 37 | Hayashi, Shinsuke (1958) | Lost 0-2 | -131617 |
| 11standard | 61 | Sun, Baoju (1629) | Lost 0-2 | -171600 |
| 12standard | 76 | Zhang, Meng (1730) | Won 2-0 | +201620 |
| 13standard | 69 | Miyagishi, Kohei (1614) | Won 2-1 | +181638 |
| 14standard | 56 | Wen, Tsai Lin (1609) | Won 2-0 | +171655 |
| 15standard | 31 | Cuello, Anthony (1538) | Won 2-0 | +161671 |
| top | average opponent: 1699record: 10-4 | new rating: 1671 | ||
| Grand Prix Hong Kong 2018 (modern) | starting rating: 1584 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 203 | Fang, Zhengyang (1561) | Lost 0-2 | -181566 |
| 2modern | 257 | Smith, Ethan (1483) | Won 2-1 | +161582 |
| 3modern | 305 | Wang, Wenbin (1578) | Won 2-0 | +181600 |
| 4modern | 233 | Hirayama, Rei (1485) | Lost 0-2 | -201580 |
| 5modern | 298 | Wong, Wei Quan (1629) | Lost 0-2 | -171563 |
| 6modern | 289 | Zhou, Tong 2749 (1464) | Lost 1-2 | -201543 |
| top | average opponent: 1533record: 2-4 | new rating: 1543 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1610 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 355 | Suga, Junichi (1536) | Lost 1-2 | -191591 |
| 4standard | 776 | Maruyama, Muneyuki (1483) | Won 2-1 | +161607 |
| 5standard | 241 | Mukasa, Yoshiya (1523) | Lost 1-2 | -201587 |
| 6standard | 675 | Yoshikawa, Hidenobu (1630) | Won 2-0 | +191606 |
| 7standard | 354 | Hasegawa, Shouichi (1542) | Won 2-0 | +171623 |
| 8standard | 242 | Miyawaki, Takayuki (1422) | Lost 0-2 | -221601 |
| 9standard | 446 | Nomoto, Hidetaka (1628) | Lost 1-2 | -171584 |
| top | average opponent: 1538record: 3-4 | new rating: 1584 | ||
| Grand Prix Taipei 2016 (SOI standard) | starting rating: 1552 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 142 | Su, Jee Hung (1623) | Won 2-1 | +191571 |
| 4standard | 13 | Takahashi, Nao (1557) | Draw 1-1 | 01571 |
| 5standard | 64 | Hung, Hsun Hao (1718) | Won 2-1 | +211592 |
| 6standard | 30 | Tang, Kenneth (1533) | Lost 0-2 | -191573 |
| 7standard | 83 | Chen, Shao-Lun (1575) | Won 2-0 | +181591 |
| 8standard | 43 | Higashino, Shogo (1390) | Won 2-0 | +141605 |
| 9standard | 32 | Imanaka, Kouta (1611) | Won 2-0 | +181623 |
| 10standard | 14 | Chung, Jason (2061) | Lost 0-2 | -101613 |
| 11standard | 43 | Kawachi, Yusuke (1706) | Won 2-0 | +191632 |
| 12standard | 19 | Aoki, Yoshitsugu (1675) | Won 2-0 | +191651 |
| 13standard | 14 | Yeh, Chih-Cheng (1922) | Lost 1-2 | -131638 |
| 14standard | 28 | Tay, Jun Hao (1859) | Lost 0-2 | -141624 |
| 15standard | 46 | Tan, Chin Heng (1866) | Lost 1-2 | -141610 |
| top | average opponent: 1700record: 7-5-1 | new rating: 1610 | ||
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 91 | An, Young Gil (1449) | Won 2-1 | +151613 |
| 2sealed | 114 | Sripongam, Boonyakiet (1391) | Lost 1-2 | -221591 |
| 3sealed | 242 | Han, Ziyu (1498) | Lost 1-2 | -191572 |
| 4sealed | 316 | Gao, Rui (1485) | Lost 1-2 | -201552 |
| top | average opponent: 1456record: 1-3 | new rating: 1552 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1650 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 149 | Liu, Yuchen (1855) | Lost 0-2 | -141636 |
| 4sealed | 270 | Ogura, Ryou (1830) | Won 2-1 | +211657 |
| 5sealed | 176 | Abe, Michio (1536) | Lost 0-2 | -201637 |
| 6sealed | 126 | Yamada, Ryuichiro (1575) | Lost 0-2 | -191618 |
| 7sealed | 221 | Yoshimura, Wataru (1501) | Lost 0-2 | -201598 |
| top | average opponent: 1659record: 1-4 | new rating: 1598 | ||
| Grand Prix Beijing 2014 (BNG standard) | starting rating: 1665 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 13 | Liu, Jin (1603) | Won 2-1 | +161681 |
| 4standard | 40 | Jin, Xin (1584) | Lost 1-2 | -191662 |
| 5standard | 69 | Cai, Jun Yan (1610) | Won 2-0 | +171679 |
| 6standard | 124 | Gao, Yunfei (1462) | Won 2-1 | +141693 |
| 7standard | 73 | Li, Linghua (1571) | Won 2-0 | +161709 |
| 8standard | 19 | Nakamura, Shuhei (1962) | Lost 0-2 | -141695 |
| 9standard | 60 | Xiao, Zenan (1577) | Won 2-0 | +161711 |
| 10standard | 19 | Guo, Qin wei (1584) | Lost 0-2 | -201691 |
| 11standard | 56 | Mao, Dun (1543) | Lost 0-2 | -211670 |
| 12standard | 56 | Gao, Hang (1576) | Lost 0-2 | -201650 |
| top | average opponent: 1607record: 5-5 | new rating: 1650 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1619 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 537 | Akedo, Akihiro (1480) | Won 2-1 | +161635 |
| 4standard | 507 | Masaki, Yuuki (1665) | Won 2-1 | +181653 |
| 5standard | 542 | Kasli, Nick (1430) | Won 2-1 | +141667 |
| 6standard | 508 | Hirayama, Atsushi (1727) | Lost 1-2 | -171650 |
| 7standard | 525 | Fujimoto, Tomoya (1559) | Won 2-1 | +171667 |
| 8standard | 516 | Ito, Yuta (1597) | Won 2-0 | +161683 |
| 9standard | 625 | Koshimura, Takeshi (1604) | Won 2-0 | +171700 |
| 10standard | 18 | Yasooka, Shota (2103) | Lost 0-2 | -111689 |
| 11standard | 32 | Yamada, Toshihiro (1597) | Won 2-1 | +161705 |
| 12standard | 41 | Mochiki, Kazuto (1653) | Lost 1-2 | -191686 |
| 13standard | 35 | Uzawa, Yuichi (1621) | Lost 1-2 | -191667 |
| 14standard | 62 | Minoshima, Takenori (1478) | Won 2-1 | +151682 |
| 15standard | 39 | Kawabata, Ryosuke (1722) | Lost 0-2 | -171665 |
| top | average opponent: 1634record: 8-5 | new rating: 1665 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 237 | Yamamura, Mitsutoshi (1329) | Draw 1-1 | -31501 |
| 2standard | 261 | Kakimoto, Yuki (1500) | Won 2-1 | +181519 |
| 3standard | 261 | Satou, Masaya (1443) | Won 2-0 | +161535 |
| 4standard | 163 | Yoon, SooHan (1778) | Won 2-1 | +231558 |
| 5standard | 85 | Yoshihara, Tomoki (1497) | Won 2-0 | +171575 |
| 6standard | 44 | Sugiki, Takafumi (1739) | Lost 0-2 | -151560 |
| 7standard | 110 | Yasuda, Ryouhei (1448) | Won 2-1 | +161576 |
| 8standard | 67 | Pritt, Gary (1533) | Won 2-0 | +171593 |
| 9standard | 40 | Yamada, Hiroki (1483) | Won 2-1 | +161609 |
| 10standard | 24 | Yamamoto, Kouhei (1716) | Lost 1-2 | -161593 |
| 11standard | 53 | Sugiura, Takuya (1608) | Won 2-0 | +181611 |
| 12standard | 32 | Hirata, Minoru (1722) | Won 2-0 | +201631 |
| 13standard | 20 | Morofuji, Takuma (2037) | Won 2-0 | +251656 |
| 14standard | 12 | Naitou, Takashi (1688) | Lost 0-2 | -171639 |
| 15standard | 24 | Yoon, Je Yeon (1565) | Lost 1-2 | -201619 |
| top | average opponent: 1606record: 10-4-1 | new rating: 1619 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 337 | Kobayashi, Hidetoshi (1371) | Won 2-1 | +161500 |
| 2sealed | 63 | Matsumura, Takehiko (1424) | Lost 0-2 | -201480 |
| 3sealed | 407 | Kidera, Seita (1578) | Lost 0-2 | -161464 |
| 4sealed | 408 | Udagawa, Takafumi (1486) | Won 2-0 | +181482 |
| 5sealed | 308 | Sugimoto, Hiroaki (1565) | Won 2-1 | +201502 |
| 6sealed | 290 | Hata, Takahiro (1519) | Lost 1-2 | -181484 |
| 7sealed | 225 | Saegusa, Nobuyuki (1505) | Won 2-1 | +191503 |
| 8sealed | 304 | Shimizu, Toshiki (1538) | Lost 0-2 | -181485 |
| 9sealed | 332 | Miyata, Yuuya (1521) | Won 2-0 | +191504 |
| top | average opponent: 1501record: 5-4 | new rating: 1504 | ||
| Grand Prix Taipei 2005 (Kamigawa block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 75 | Chen, Steven (1483) | Lost 0-2 | -181482 |
| 2block | 82 | Chang, Yun Ann (1482) | Lost 0-2 | -181464 |
| 3block | 102 | Lin, Joe (1501) | Lost 0-2 | -181446 |
| 5block | 113 | Kuo, Ming Chen (1464) | Lost 1-2 | -171429 |
| 6block | 112 | Chan, Shi How (1446) | Won 2-0 | +181447 |
| 7block | 95 | Xiao, Yang Yu (1463) | Won 2-0 | +181465 |
| 8block | 78 | Wang, Chris (1485) | Won 2-0 | +191484 |
| top | average opponent: 1475record: 3-4 | new rating: 1484 | ||