Most In-Form full-backs in K League 1 2026
The most in-form full-backs in K League 1 in 2026, ranked on Field Insider.
At a glance
Choi Woo-Jin of Jeonbuk Motors is the standout for raw talent across full-backs in K League 1, with a Field Insider Rating of 46.3, and Choi Jun has been the form player this season, grading 26.6, and Kim Young-Bin leads the scoring with 2 goals.
The numbers a scout watches are the year-on-year jumps: Kim Young-Bin has improved his Season rating most, up +11.8 on last season, while Cho Hyun-Taek's scouting Rating has risen fastest, +1.7 over the same span. Those are the players whose trajectory is bending upward fastest.
By our market-value index, Choi Seok-Hyun of Ulsan Hyundai FC is the most valuable name in this group at 11.2.
16 players · ranked by best this seasonCustomise →
| Player | Team | ||||
|---|---|---|---|---|---|
| 1 | Choi JunFull-back |  FC Seoul | 27 | 2768.4% | 3814.3% |
| 2 | Kang Joon-HyuckFull-back |  Gangwon FC | 26 | 2655.8% | 4215.8% |
| 3 | Kim Young-BinFull-back |  Jeonbuk Motors | 34 | 23124.5% | 1327.9% |
| 4 | Choi Woo-JinFull-back | Jeonbuk Motors | 22 | 20 | 46 |
| 5 | J. CélestineFull-back |  Jeju United FC | 29 | 17140.8% | 3059% |
| 6 | Yazan Al ArabFull-back | FC Seoul | 30 | 177.3% | 254.3% |
| 7 | Eo Jeong-WonFull-back |  Pohang Steelers | 27 | 1514.5% | 361.1% |
| 8 | Hong Sung-WookFull-back |  Bucheon FC 1995 | 23 | 1514700% | 438% |
| 9 | Lee Jung-TaekFull-back |  Gimcheon Sangmu FC | 28 | 1515.1% | 311.3% |
| 10 | Kim Ryun-SeongFull-back | Jeju United FC | 24 | 1411.9% | 45±0% |
| 11 | Kim Moon-HwanFull-back |  Daejeon Citizen | 31 | 1122.6% | 201.5% |
| 12 | Oh In-PyoFull-back | FC Seoul | 29 | 10 | 2711.3% |
| 13 | Park Cheol-WooFull-back | Gimcheon Sangmu FC | 28 | 1038.6% | 301% |
| 14 | Lee YongFull-back |  Suwon City FC | 39 | 756% | 652.5% |
| 15 | Caio MarceloFull-back |  Daegu FC | 28 | 735.2% | 3122.3% |
| 16 | Cho Hyun-TaekFull-back |  Ulsan Hyundai FC | 25 | 76.3% | 4510.3% |