Choi, Jaekyoo
Current rating: 1464
Record: 32-38
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 668 | Shiota, Fumihiko (1868) | Won 2-0 | +241516 |
| 2sealed | 240 | Osako, Sho (1518) | Lost 0-2 | -181498 |
| 3sealed | 869 | Wakizaka, Hironari (1544) | Lost 0-2 | -171481 |
| 4sealed | 844 | Ishikawa, Reiji (1486) | Won 2-1 | +181499 |
| 5sealed | 656 | Ito, Wataru (1574) | Won 2-1 | +201519 |
| 6sealed | 673 | Wada, Yasutaka (1562) | Lost 0-2 | -181501 |
| 7sealed | 622 | Kazami, Hayato (1451) | Lost 0-2 | -191482 |
| 8sealed | 546 | Yoshida, Akihiko (1479) | Lost 1-2 | -181464 |
| top | average opponent: 1560record: 3-5 | new rating: 1464 | ||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 68 | Whitney, Derek (1405) | Won 2-0 | +161504 |
| 2sealed | 124 | Hansen, Jeff (1424) | Won 2-0 | +171521 |
| 3sealed | 48 | Bartlett, Ethan (1593) | Won 2-1 | +191540 |
| 4sealed | 196 | Lerch, Corey (1646) | Lost 1-2 | -161524 |
| 5sealed | 165 | Velazquez, Erick (1718) | Lost 0-2 | -151509 |
| 6sealed | 312 | Stone, Alexander (1522) | Lost 1-2 | -171492 |
| 7sealed | 423 | Reyes, Victor (1530) | Lost 0-2 | -181474 |
| 8sealed | 337 | Thoni, Ethan (1438) | Won 2-0 | +181492 |
| top | average opponent: 1535record: 4-4 | new rating: 1492 | ||
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 94 | Li, Tingfei (1494) | Won 2-0 | +171538 |
| 2sealed | 45 | Yu, Yang (1407) | Won 2-1 | +161554 |
| 3sealed | 37 | Dong, Ziyang (1474) | Lost 1-2 | -201534 |
| 4sealed | 137 | Kawaguchi, Tetsu (1585) | Lost 0-2 | -171517 |
| 5sealed | 220 | Fernandez, Marcos Jose (1605) | Lost 1-2 | -161501 |
| 6sealed | 356 | Li, Wenbo (1692) | Lost 1-2 | -151486 |
| 7sealed | 315 | Li, Bosen (1456) | Won 2-0 | +181504 |
| 8sealed | 239 | Qin, Xiaoqi (1606) | Lost 0-2 | -161488 |
| top | average opponent: 1540record: 3-5 | new rating: 1488 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1584 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 324 | Jitsukawa, Naofumi (1684) | Lost 0-2 | -161568 |
| 2sealed | 674 | Tawa, Goro (1482) | Won 2-0 | +161584 |
| 3sealed | 803 | Kobayashi, Ryosuke (1544) | Won 2-0 | +171601 |
| 4sealed | 532 | Tsuji, Ryosuke (1520) | Lost 0-2 | -191582 |
| 5sealed | 820 | Tamura, Kenji (1554) | Lost 0-2 | -191563 |
| 6sealed | 849 | Fukuoka, Naoto (1483) | Lost 0-2 | -191544 |
| 7sealed | 891 | Kumazawa, Yuki (1415) | Lost 1-2 | -201524 |
| 8sealed | 799 | Wong, Andy (1446) | Lost 1-2 | -201504 |
| 9sealed | 700 | Yanagawa, Hironori (1424) | Won 2-1 | +171521 |
| top | average opponent: 1506record: 3-6 | new rating: 1521 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 449 | Katsura, Yuu (1494) | Won 2-0 | +181525 |
| 4sealed | 191 | Nomura, Takeshi (1400) | Won 2-0 | +151540 |
| 5sealed | 106 | Fujii, Yuusaku (1379) | Won 2-0 | +151555 |
| 6sealed | 15 | Hirose, Yoshiyuki (1570) | Won 2-1 | +191574 |
| 7sealed | 4 | Ikawa, Yoshihiko (1913) | Won 2-1 | +241598 |
| 8sealed | 10 | Nagao, Yasutaka (1752) | Lost 0-2 | -161582 |
| 9sealed | 52 | Iwasaki, Yuusuke0068 (1732) | Lost 0-2 | -151567 |
| 10draft | 15 | Shinoda, Akito (1848) | Won 2-1 | +231590 |
| 11draft | 14 | Izumi, Hikaru (1831) | Lost 1-2 | -141576 |
| 12draft | 14 | Motomura, Shigeru (1719) | Lost 0-2 | -151561 |
| 13draft | 226 | Hirata, Koutatsu (1651) | Won 2-0 | +201581 |
| 14draft | 212 | Kokubun, Takeshi (1734) | Lost 0-2 | -161565 |
| 15draft | 175 | Kabashima, Takuya (1583) | Won 2-1 | +191584 |
| top | average opponent: 1662record: 8-5 | new rating: 1584 | ||
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 169 | Liang, Zhiyong (1467) | Won 2-0 | +181495 |
| 4sealed | 103 | Woo, Jason (1501) | Won 2-1 | +181513 |
| 5sealed | 10 | Ng, Soon Lye (1823) | Lost 0-2 | -121501 |
| 6sealed | 69 | To, Chun Him (1488) | Won 2-1 | +171518 |
| 7sealed | 19 | Yao, Shunsuke (1592) | Lost 1-2 | -161502 |
| 8sealed | 83 | Ju, Yaqiong (1565) | Lost 0-2 | -171485 |
| 9sealed | 107 | Cheng, Wei Ting (1700) | Won 2-0 | +221507 |
| top | average opponent: 1591record: 4-3 | new rating: 1507 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 2022 | Goh, Jien Sheng (1449) | Lost 1-2 | -201514 |
| 4sealed | 2144 | Li, Thaksin (1483) | Lost 1-2 | -181496 |
| 5sealed | 2292 | Ji, Kanghyun (1481) | Lost 1-2 | -191477 |
| top | average opponent: 1471record: 0-3 | new rating: 1477 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 219 | Takahashi, Yoshiaki (1486) | Won 2-1 | +171522 |
| 3sealed | 67 | Kawahama, Yoshikazu (1465) | Won 2-1 | +171539 |
| 4sealed | 7 | Kumagai, Riku (1755) | Won 2-0 | +221561 |
| 5sealed | 13 | Yamamoto, Kentaro (2088) | Lost 1-2 | -91552 |
| 6sealed | 41 | Kawagishi, Yuuya (1552) | Won 2-0 | +181570 |
| 7sealed | 49 | Tang, Yu Hsiang (1553) | Lost 1-2 | -181552 |
| 8sealed | 139 | Ishiguro, Satoshi (1552) | Lost 0-2 | -181534 |
| top | average opponent: 1636record: 4-3 | new rating: 1534 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 154 | Hasegawa, Shun-ya (1503) | Won 2-1 | +181518 |
| 4standard | 107 | Nakamura, Shuhei (1980) | Won 2-1 | +261544 |
| 5standard | 29 | Huang, Hao-Shan (1815) | Lost 0-2 | -131531 |
| 6standard | 123 | Yukuhiro, Ken (2076) | Won 2-1 | +271558 |
| 7standard | 91 | Kimonji, Hiroki (1567) | Lost 0-2 | -181540 |
| 8standard | 180 | Kinugasa, Satoshi (1536) | Lost 1-2 | -181522 |
| 9standard | 197 | Morita, Yo (1565) | Lost 1-2 | -171505 |
| top | average opponent: 1720record: 3-4 | new rating: 1505 | ||