Na, Jongwon
Current rating: 1730 (#4782)
Record: 31-20-2
| Grand Prix Yokohama 2019 (modern) | starting rating: 1678 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 134 | Matsumoto, Fumiya (1731) | Won 2-0 | +191697 |
| 4modern | 34 | Ishiwada, Hiroyuki (1806) | Lost 1-2 | -161681 |
| 5modern | 449 | Ohba, Hiroshi (1583) | Won 2-1 | +171698 |
| 6modern | 162 | Shiota, Akihiko (1799) | Won 2-1 | +191717 |
| 7modern | 131 | Kobayashi, Tatsuumi (2048) | Won 2-0 | +241741 |
| 8modern | 112 | Suzuki, Masahiro (1817) | Lost 0-2 | -161725 |
| 9modern | 135 | Takahashi, Masato 3726 (1528) | Won 2-0 | +141739 |
| 10modern | 55 | Hoshino, Yuuki (1653) | Lost 0-2 | -201719 |
| 11modern | 176 | Shindo, Yuto (1596) | Lost 1-2 | -201699 |
| 12modern | 197 | Okajima, Masahiro (1606) | Won 2-0 | +171716 |
| 13modern | 128 | Noine, Kazuhiro (1790) | Won 2-1 | +191735 |
| 14modern | 99 | Tomioka, Shota (1598) | Lost 1-2 | -211714 |
| 15modern | 108 | Tasugi, Keigo (1595) | Won 2-0 | +161730 |
| top | average opponent: 1704record: 8-5 | new rating: 1730 | ||
| Grand Prix Hong Kong 2018 (modern) | starting rating: 1667 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 168 | Wen, Haoyuan (1535) | Draw 1-1 | -31664 |
| 4modern | 112 | Chen, Qu (1845) | Won 2-0 | +221686 |
| 5modern | 53 | Shen, Yufei (1519) | Won 2-0 | +151701 |
| 6modern | 27 | Ziyu, Tang (1564) | Won 2-0 | +151716 |
| 7modern | 13 | Lam, Kam Wai Wales (1669) | Lost 1-2 | -191697 |
| 8modern | 45 | Chen, Chao (1651) | Lost 0-2 | -191678 |
| top | average opponent: 1630record: 3-2-1 | new rating: 1678 | ||
| Grand Prix Beijing 2018 (DOM limited) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 100 | Wang, Ming (1530) | Won 2-1 | +171608 |
| 3sealed | 29 | Liu, Bojian (1472) | Lost 1-2 | -201588 |
| 4sealed | 229 | Xu, Qian (1609) | Won 2-1 | +181606 |
| 5sealed | 69 | Tsutsumi, Yukihiro (1494) | Won 2-1 | +161622 |
| 6sealed | 118 | Imai, Ayato (1758) | Lost 1-2 | -161606 |
| 7sealed | 132 | Feng, Qianxin (1657) | Won 2-1 | +191625 |
| 8sealed | 125 | Deng, Jun (1767) | Won 2-0 | +211646 |
| 9sealed | 86 | Sui, Dong (1678) | Won 2-1 | +191665 |
| 10draft | 33 | Yu, Yin (1722) | Lost 1-2 | -171648 |
| 11draft | 48 | Itazu, Boram (1409) | Won 2-1 | +131661 |
| 12draft | 70 | Yin, Yue (1722) | Lost 0-2 | -171644 |
| 13draft | 52 | Hu, Yi (1724) | Lost 0-2 | -161628 |
| 14draft | 33 | Stroev, Mikhail (1767) | Won 2-1 | +201648 |
| 15draft | 48 | Ma, Yiyuan (1665) | Won 2-1 | +191667 |
| top | average opponent: 1641record: 9-5 | new rating: 1667 | ||
| Grand Prix Hong Kong 2017 (XLN limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 61 | Tan, Kevin Clark (1487) | Lost 1-2 | -181451 |
| 3sealed | 239 | Ellis, Celeste (1534) | Won 2-1 | +201471 |
| 4sealed | 162 | Chua, Zong En (1518) | Won 2-1 | +191490 |
| 5sealed | 115 | Khoo, Shawn (1678) | Won 2-0 | +211511 |
| 6sealed | 70 | Tanaka, Fumihiro (1551) | Won 2-1 | +191530 |
| 7sealed | 40 | Lee, Benjamin (1509) | Lost 1-2 | -191511 |
| 8sealed | 100 | Han, Hojae (1700) | Lost 1-2 | -141497 |
| 9sealed | 82 | Zhi, Yimin (1885) | Won 2-0 | +251522 |
| 10draft | 24 | Li, Ang (1517) | Draw 1-1 | 01522 |
| 11draft | 70 | Wang, Jianian (1745) | Won 2-0 | +221544 |
| 12draft | 85 | Peng, Jianjia (1847) | Won 2-0 | +231567 |
| 13draft | 61 | Kratena, Ivo (1844) | Won 2-1 | +231590 |
| 14draft | 54 | Noguchi, Takeshi (1529) | Won 2-0 | +171607 |
| 15draft | 52 | Wang, Guan (1745) | Lost 1-2 | -161591 |
| top | average opponent: 1649record: 9-4-1 | new rating: 1591 | ||
| Grand Prix Shanghai 2014 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 167 | Guan, Jian (1539) | Lost 0-2 | -171483 |
| 4sealed | 254 | Li, Yun Cong (1516) | Lost 1-2 | -181465 |
| 5sealed | 386 | Huang, Wen-Liang (1471) | Lost 0-2 | -181447 |
| 6sealed | 394 | Zhu, Ze (1432) | Won 2-0 | +181465 |
| 7sealed | 336 | Yang, Shuang9029 (1500) | Won 2-1 | +191484 |
| 8sealed | 251 | Blaas, Jasper (1664) | Lost 0-2 | -151469 |
| top | average opponent: 1520record: 2-4 | new rating: 1469 | ||