Most Improved defenders in J3 League 2026
The most improved defenders in J3 League in 2026, ranked on Field Insider.
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 58.2, 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 +22.1 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 4.4.
6 players · ranked by most improvedCustomise →
| Player | Team | |||||
|---|---|---|---|---|---|---|
| 1 | Y. HasegawaFull-back |  Parceiro Nagano | 29 | +22.1 21/22→25/26 | 29302.7% | 1760.8% |
| 2 | K. KitazumeFull-back |  Matsumoto Yamaga | 34 | +15.4 22/23→25/26 | 22220% | 1627.4% |
| 3 | K. MatsudaCentre-back |  Renofa Yamaguchi | 26 | +6.9 24/25→25/26 | 11186.5% | 3223.5% |
| 4 | N. YamamotoCentre-back |  Kanazawa | 31 | +2.7 22/23→25/26 | 2015.9% | 1464% |
| 5 | K. OiwaCentre-back | Renofa Yamaguchi | 37 | -7.2 24/25→25/26 | 652.9% | 846.6% |
| 6 | M. KamekawaCentre-back | Renofa Yamaguchi | 33 | -10.5 24/25→25/26 | 857.7% | 1053.9% |