Most In-Form defenders in K League 1 2026

The most in-form defenders in K League 1 in 2026, ranked on Field Insider.

Most in-form goalkeepers in K League 1 Most in-form midfielders in K League 1 Most in-form attackers in K League 1 Best defenders in K League 1 Top-scoring defenders in K League 1 Most valuable defenders in K League 1

At a glance

Choi Woo-Jin of Jeonbuk Motors is the standout for raw talent across defenders in K League 1, with a Field Insider Rating of 46.3, and Jin Si-Woo has been the form player this season, grading 33.2, and Kim Kang-San leads the scoring with 2 goals.

The numbers a scout watches are the year-on-year jumps: Song Jun-Seok has improved his Season rating most, up +23.7 on last season, while Lee Hyun-Yong's scouting Rating has risen fastest, +2.9 over the same span. Those are the players whose trajectory is bending upward fastest.

By our market-value index, Jin Si-Woo of Gwangju FC is the most valuable name in this group at 13.5.

Suwon City FC · 24/25→25/26

Most improved

Song Jun-Seok+23.7SsN

Gimcheon Sangmu FC · 24/25→25/26

50 players · ranked by best this seasonCustomise →

	Player	Team
1	Jin Si-Woo Centre-back	Gwangju FC	24	3365.2%	430.7%
2	Song Jun-Seok Centre-back	Gimcheon Sangmu FC	25	3126.4%	446.6%
3	Choi Jun Full-back	FC Seoul	27	2768.4%	3814.3%
4	Kang Joon-Hyuck Full-back	Gangwon FC	26	2655.8%	4215.8%
5	Juan Antonio Centre-back	FC Seoul	30	2518.6%	2622.6%
6	Cho Wi-Je Full-back	Jeonbuk Motors	25	24	456.1%
7	Kim Young-Bin Full-back	Jeonbuk Motors	35	23124.5%	1327.9%
8	M. Tuci Centre-back	Gangwon FC	27	2331.6%	3812.5%
9	Choi Woo-Jin Full-back	Jeonbuk Motors	22	20	46
10	Kim Jin-Su Centre-back	FC Seoul	34	2016.4%	1211.3%
11	Jo Seong-Kwon Centre-back	Daejeon Citizen	25	182.8%	416.4%
12	Kim Tae-Hwan Centre-back	Jeonbuk Motors	37	176.7%	8±0%
13	J. Célestine Full-back	Jeju United FC	29	17140.8%	3059%
14	Yazan Al Arab Full-back	FC Seoul	30	177.3%	254.3%
15	Yu In-Soo Full-back	Jeju United FC	31	1546.7%	217.9%
16	Hong Sung-Wook Full-back	Bucheon FC 1995	24	1514700%	438%
17	Eo Jeong-Won Full-back	Pohang Steelers	27	1514.5%	361.1%
18	Baek Dong-Gyu Centre-back	Bucheon FC 1995	35	1569.7%	1164.3%
19	Lee Jung-Taek Full-back	Gimcheon Sangmu FC	28	1515.1%	311.3%
20	Kim Ryun-Seong Full-back	Jeju United FC	24	1411.9%	45±0%
21	Kim Tae-Hwan Centre-back	Gimcheon Sangmu FC	26	14255.3%	386.2%
22	Kim Kang-San Centre-back	Daegu FC	28	124.3%	3417.8%
23	Park Chan-Yong Centre-back	Pohang Steelers	30	121.8%	243.5%
24	Kim Moon-Hwan Full-back	Daejeon Citizen	31	1122.6%	201.5%
25	Oh In-Pyo Full-back	FC Seoul	29	10	2711.3%
26	Jeon Min-Gwang Centre-back	Pohang Steelers	33	1054.1%	1222.1%
27	Lee Hyun-Yong Centre-back	Suwon City FC	22	10212.5%	457%
28	Kim Tae-Hyun Full-back	Jeonbuk Motors	29	1043.9%	270.7%
29	Park Cheol-Woo Full-back	Gimcheon Sangmu FC	28	1038.6%	301%
30	Jung Seung-Hyun Centre-back	Ulsan Hyundai FC	32	92.1%	175.6%
31	Patrick William Full-back	Bucheon FC 1995	29	911%	259%
32	Kim Jae-Woo Centre-back	Jeju United FC	28	9	30
33	Derlan Centre-back	Suwon City FC	30	923.6%	1964.7%
34	Choi Kyu-Baek Centre-back	Suwon City FC	32	824.8%	1732.7%
35	Lee Chang-Yong Centre-back	FC Anyang	36	721.7%	924.2%
36	Lee Yong Full-back	Ulsan Hyundai FC	39	756%	652.5%
37	Kang Yun-Sung Centre-back	Daejeon Citizen	29	712.9%	249.3%
38	Caio Marcelo Full-back	FC Seoul	28	735.2%	3122.3%
39	Cho Hyun-Taek Full-back	Ulsan Hyundai FC	25	76.3%	4510.3%
40	Choi Seok-Hyun Full-back	Ulsan Hyundai FC	23	738.3%	4611.8%
41	Lee Si-Young Centre-back	Suwon City FC	29	6800%	2724.2%
42	Lee Zi-Sol Centre-back	Suwon City FC	27	6123.1%	3415%
43	Tobias Figueiredo Centre-back	Jeju United FC	32	585%	1562.3%
44	Wanderson Full-back	Pohang Steelers	37	5444.4%	591.7%
45	Lee Myung-Jae Full-back	Daejeon Citizen	32	551%	1521.6%
46	Lee Jae-Ik Centre-back	Ulsan Hyundai FC	27	529.7%	3613.6%
47	A. Krivotsyuk Centre-back	Daejeon Citizen	28	556.4%	2716.8%
48	Kwon Kyung-Won Centre-back	FC Anyang	34	545.8%	99.6%
49	Kim Young-Gwon Centre-back	Ulsan Hyundai FC	36	481.5%	930.5%
50	Byeon Jun-Soo Centre-back	Gimcheon Sangmu FC	24	381.1%	407.8%