Most Improved defenders in J3 League 2026

The most improved defenders in J3 League in 2026, ranked on Field Insider.

Most improved goalkeepers in J3 League Most improved midfielders in J3 League Most improved attackers in J3 League Best defenders in J3 League Most in-form defenders in J3 League Top-scoring defenders in J3 League

At a glance

Ri Thae-Ha of Roasso Kumamoto is the standout for raw talent across defenders in J3 League, with a Field Insider Rating of 35.4, and K. Minoda has been the form player this season, grading 43.9, and G. Egawa leads the scoring with 6 goals.

The numbers a scout watches are the year-on-year jumps: Y. Hasegawa has improved his Season rating most, up +9.1 on last season. Those are the players whose trajectory is bending upward fastest.

By our market-value index, H. Iwasaki of Tochigi SC is the most valuable name in this group at 4.6.

Matsumoto Yamaga · 22/23→25/26

Most improved

Y. Hasegawa+9.1SsN

Parceiro Nagano · 21/22→25/26

6 players · ranked by most improvedCustomise →

	Player	Team
1	Y. Hasegawa Full-back	Parceiro Nagano	29	+9.1 21/22→25/26	16124.7%	1760.8%
2	K. Kitazume Full-back	Matsumoto Yamaga	34	+5.4 22/23→25/26	1277.1%	1627.4%
3	K. Matsuda Centre-back	Renofa Yamaguchi	26	+2.1 24/25→25/26	656.8%	3223.5%
4	N. Yamamoto Centre-back	Kanazawa	31	-5.9 22/23→25/26	1134.7%	1464%
5	K. Oiwa Centre-back	Renofa Yamaguchi	37	-10.6 24/25→25/26	377.9%	846.6%
6	M. Kamekawa Centre-back	Renofa Yamaguchi	33	-13.3 24/25→25/26	573.1%	1053.9%