Choi, Jae-Joon
Current rating: 1739 (#4396)
Record: 50-38-2 (GP) / 3-5 (professional)
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1720 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 236 | Shibata, Yohei (1468) | Lost 0-2 | -231697 |
| 2pioneer | 463 | Tamura, Hajime (1535) | Won 2-1 | +161713 |
| 3pioneer | 701 | Umezawa, Naoki (1479) | Lost 1-2 | -231690 |
| 4pioneer | 582 | Sunaga, Ayumu (1396) | Won 2-0 | +131703 |
| 5pioneer | 476 | Moriyama, Wataru (1496) | Won 2-0 | +141717 |
| 6pioneer | 265 | Tago, Daisuke (1621) | Won 2-0 | +171734 |
| 7pioneer | 168 | Kakimoto, Yuki (1416) | Won 2-1 | +121746 |
| 8pioneer | 171 | Toma, Hiroto (1735) | Won 2-0 | +181764 |
| 9pioneer | 119 | Hirose, Yutaka (1347) | Lost 1-2 | -251739 |
| top | average opponent: 1499record: 6-3 | new rating: 1739 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1795 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 362 | Kim, Seok Hyun (1416) | Lost 0-2 | -251770 |
| 4standard | 448 | Saito, Shinya (1956) | Lost 0-2 | -141756 |
| 5standard | 731 | Kumazawa, Futa (1502) | Lost 1-2 | -231733 |
| 6standard | 793 | Tanaka, Masataka (1575) | Lost 0-2 | -211712 |
| 7standard | 779 | Suzuki, Shutaro (1413) | Draw 1-1 | -51707 |
| 8standard | 712 | Hoshi, Masaru (1433) | Won 2-0 | +131720 |
| top | average opponent: 1549record: 1-4-1 | new rating: 1720 | ||
| Grand Prix Singapore 2017 (XLN limited) | starting rating: 1728 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 62 | Wa, Ho (1475) | Won 2-1 | +131741 |
| 4sealed | 55 | Ding, Yi (1720) | Won 2-1 | +181759 |
| 5sealed | 3 | Heng, Chye Hwee (1818) | Lost 0-2 | -171742 |
| 6sealed | 27 | Toman, Stefan (1599) | Lost 1-2 | -211721 |
| 7sealed | 73 | Lam, Tony (Nghia) (1835) | Won 2-1 | +201741 |
| 8sealed | 83 | Takimura, Kazuyuki (1919) | Lost 1-2 | -141727 |
| 9sealed | 120 | Tay, Filbert (1552) | Won 2-0 | +141741 |
| 10draft | 37 | Dowling, Thomas (1573) | Won 2-1 | +151756 |
| 11draft | 84 | Sia, Pei Ren (1640) | Won 2-0 | +161772 |
| 12draft | 14 | Tsubouchi, Tomoya (2077) | Lost 1-2 | -121760 |
| 13draft | 13 | Nam, Kyung-Min (1662) | Won 2-0 | +161776 |
| 14draft | 13 | Ishihara, Jun (1826) | Won 2-1 | +191795 |
| 15draft | 12 | Yu, Ching Kong (1640) | ID | 01795 |
| top | average opponent: 1718record: 8-4-1 | new rating: 1795 | ||
| Grand Prix Shanghai 2017 (XLN standard) | starting rating: 1675 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 45 | Lee, Wing Tat (1552) | Lost 0-2 | -201655 |
| 4standard | 201 | Matsuura, Takumi (1790) | Won 2-0 | +211676 |
| 5standard | 68 | Yin, Xin (1814) | Won 2-0 | +201696 |
| 6standard | 40 | Wen, Yi (1560) | Lost 1-2 | -201676 |
| 7standard | 119 | Shivji, Qail (1616) | Lost 1-2 | -191657 |
| 8standard | 137 | Liang, Jerry (1520) | Won 2-0 | +151672 |
| 9standard | 91 | Wei, Guowei (1594) | Won 2-0 | +171689 |
| 10standard | 67 | Wang, Chong (1653) | Won 2-1 | +171706 |
| 11standard | 71 | Tian, Ye (1588) | Won 2-1 | +161722 |
| 12standard | 37 | Ni, Ziyue (1688) | Won 2-0 | +171739 |
| 13standard | 30 | Gao, Tan (1797) | Lost 0-2 | -171722 |
| 14standard | 33 | Ohki, Tatsuhiko (1744) | Lost 1-2 | -171705 |
| 15standard | 43 | Huang, Hao-Shan (1980) | Won 2-0 | +231728 |
| top | average opponent: 1684record: 8-5 | new rating: 1728 | ||
| Pro Tour Ixalan (XLN standard) | starting rating: 1691 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 17 | Vuillot, Samuel (1880) | Lost 1-2 | -151676 |
| 2draft | 17 | Padilla, Travis (1687) | Lost 0-2 | -181658 |
| 3draft | 17 | Baumeister, Corey (2120) | Won 2-1 | +261684 |
| 4standard | 137 | Woodward, Warren (1763) | Lost 1-2 | -161668 |
| 5standard | 203 | Little, Dustin (1590) | Lost 1-2 | -201648 |
| 6standard | 189 | Ayers, Brandon (1863) | Lost 1-2 | -141634 |
| 7standard | 212 | Calderon, Andrew (1948) | Won 2-0 | +231657 |
| 8standard | 185 | Kikkawa, Dillon (1656) | Won 2-1 | +181675 |
| top | average opponent: 1813record: 3-5 | new rating: 1675 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 110 | McDonald, Ike (1534) | Won 2-0 | +181565 |
| 4sealed | 131 | Roberts, Kurtis (1709) | Won 2-1 | +201585 |
| 5sealed | 48 | Simon, Michael (1716) | Won 2-0 | +211606 |
| 6sealed | 28 | Berrios, Stephen (1914) | Lost 0-2 | -131593 |
| 7sealed | 43 | Young, Travis (1507) | Won 2-0 | +171610 |
| 8sealed | 12 | Benson, Jonathan (1948) | Lost 0-2 | -131597 |
| 9sealed | 54 | Koch, Florian (1928) | Won 2-1 | +241621 |
| 10draft | 116 | Alter, Scott (1860) | Lost 0-2 | -131608 |
| 11draft | 152 | Gaieski, Ethan (1966) | Won 2-0 | +241632 |
| 12draft | 47 | dos Santos Esteves, Carlos Alexandre (1951) | Won 2-0 | +231655 |
| 13draft | 159 | Berrios, Stephen (1925) | Won 2-0 | +231678 |
| 14draft | 131 | Kim, Jeremy (1957) | Won 2-1 | +231701 |
| 15draft | 66 | Saporito, Thiago (2132) | Lost 0-2 | -101691 |
| top | average opponent: 1850record: 9-4 | new rating: 1691 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 69 | Yasuda, Masayuki (1853) | Lost 0-2 | -131563 |
| 4standard | 584 | Kitahara, Hiroaki (1812) | Lost 1-2 | -131550 |
| 5standard | 810 | Hattori, Kazuki (1605) | Lost 1-2 | -171533 |
| 6standard | 948 | San, Tateisi (1479) | Won 2-1 | +171550 |
| 7standard | 686 | Matsuo, Shuto (1474) | Lost 0-2 | -201530 |
| 8standard | 853 | Sakai, Hironori (1448) | Won 2-0 | +171547 |
| top | average opponent: 1612record: 2-4 | new rating: 1547 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 358 | Frej Hoffman, Emil (1540) | Lost 0-2 | -171447 |
| 4standard | 562 | Kurata, Tomohiro (1515) | Won 2-1 | +191466 |
| 5standard | 681 | Nakata, Yuusaku (1606) | Won 2-1 | +211487 |
| 6standard | 268 | Anzai, Yuusuke (1654) | Won 2-1 | +211508 |
| 7standard | 240 | Lai, Pak Yin (1901) | Lost 0-2 | -111497 |
| 8standard | 193 | Jinno, Kaname (1330) | Lost 1-2 | -211476 |
| 9standard | 373 | Kuroda, Shotaro (1528) | Won 2-0 | +181494 |
| 10standard | 320 | Fujino, Masashi (1592) | Won 2-1 | +201514 |
| 11standard | 219 | Ito, Hajime (1577) | Won 2-1 | +191533 |
| 12standard | 208 | Budisanjaya, Albert (1743) | Lost 1-2 | -141519 |
| 13standard | 222 | Abe, Michio (1520) | Won 2-0 | +181537 |
| 14standard | 151 | Nomura, Tsuyoshi (1627) | Won 2-1 | +201557 |
| 15standard | 133 | Masumoto, Kazuhiro (1643) | Won 2-0 | +191576 |
| top | average opponent: 1598record: 9-4 | new rating: 1576 | ||
| Grand Prix Hong Kong 2015 (ORI limited) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 12 | Ng, Jun Wei (1464) | Lost 1-2 | -181456 |
| 4sealed | 238 | Chaovarindr, Thirawat (1611) | Won 2-1 | +211477 |
| 5sealed | 144 | Wong, Wing Lun (1535) | Won 2-1 | +191496 |
| 6sealed | 39 | Sano, Futoshi (1707) | Lost 0-2 | -151481 |
| 7sealed | 184 | Wong, Thomas (1490) | Lost 0-2 | -171464 |
| top | average opponent: 1561record: 2-3 | new rating: 1464 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 832 | Kadowaki, Toshiki (1537) | Won 2-1 | +181506 |
| 4sealed | 835 | Hamano, Takuya (1554) | Draw 1-1 | +11507 |
| 5sealed | 862 | Takakura, Shota (1555) | Lost 0-2 | -171490 |
| 6sealed | 953 | Shimoguchi, Motofumi (1584) | Won 2-1 | +201510 |
| 7sealed | 889 | Hu, Shaofan (1553) | Lost 0-2 | -171493 |
| 8sealed | 955 | Yashiki, Kouichi (1448) | Lost 0-2 | -191474 |
| top | average opponent: 1538record: 2-3-1 | new rating: 1474 | ||
| Grand Prix Manila 2015 (KTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 90 | Capote, Kathlean (1500) | Won 2-0 | +181518 |
| 4standard | 72 | Oledan, Earl (1504) | Won 2-1 | +181536 |
| 5standard | 32 | Batac, Michael Tom (1662) | Lost 1-2 | -161520 |
| 6standard | 96 | Soriano, Robert William (1530) | Lost 0-2 | -181502 |
| 7standard | 220 | Regino, Jaime Lorenzo (1555) | Lost 1-2 | -171485 |
| 8standard | 286 | Espeso, John (1520) | Won 2-1 | +191504 |
| 9standard | 209 | Malsin, Ray Roger (1601) | Lost 0-2 | -161488 |
| top | average opponent: 1553record: 3-4 | new rating: 1488 | ||