Naoki Kawaguchi

Following his move to Jubilo Iwata, Kawaguchi's current-season form is level with last season (Season 4→2), while his Rating eased 21→12. His peak season for form remains 2022/23 (Season 15).

Domestic career

Season	Club	Apps	A	Match	RTG	Season
2025/26	Jubilo Iwata · 5th	5	0	—	12	2
2024/25	Kashiwa Reysol · 17th	12	0	6.58	21	4
2023/24	Kashiwa Reysol · 17th	14	0	6.56	26	9
2022/23	Kashiwa Reysol · 7th	21	2	6.67	35	15
2021/22	Kashiwa Reysol · 15th	15	0	6.65	35	9

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 8 earlier seasons in the full career.

Japan · international

Side	Apps	G
Japan U17	4	0

Career caps & goals — tournament breakdown in the full career.

Scout report

Experienced headCentral defender

N. Kawaguchi is a 32-year-old central defender at FC Ryukyu, rated 13.1 overall by Field Insider's model. A seasoned veteran, he has been a fringe squad member this season (19.4% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Kawaguchi.

On the season, Kawaguchi graded 4 for current form (age-blind), on 1 clean sheet and 0 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 4 → 2). Over the 6 seasons on record his form has drifted down, peaking in 2022/23.

On long-term talent our Rating reads 13. At 32 Kawaguchi is into the veteran stage, where the age curve weighs on the projection, and a market index of 0.5 reflects that trajectory.

From the career report

Read the full career report →

Past his 2022/23 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2022/23Trending downRemarkably consistent

13.1

Ratingi

below regular-starter level

Seasoni

below regular-starter level

19.4%

Minutes

limited game time

Def. actions / 90

light defensive volume

Output in context · FC Ryukyu finished 14th of 20 · a lower-table side

Apps

Def. / 90

—

Tackles

—

Interceptions

Clean sheets

0 tackles, blocks & interceptions per 90 — light defensive volume, with 1 clean sheet across 5 appearances. Doing that for a lower-table side (14th of 20) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight.

Watch points

Game time. Only 19.4% of available minutes — needs a settled run to prove the level.
Age curve. At 32, both level and resale value are on the downslope.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 13.1 overall — below regular-starter level. Defensively he reads as light defensive volume (0 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.8× and falling).

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %19.4%

Available fixtures5 of 10

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900

Player flow

Goal involvements0

Cards / 900

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 22–27 (~1), then tapers with age. At 32, Kawaguchi sits on 0.5, past its peak and easing. The blue line is Kawaguchi's projected Rating — 13.1 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.

Season statistics

Bars = where he ranks among centre-backs in the J3 League with 600+ minutes this season.

Shooting

Goals0

Passing

Assists0

Yellow/red cards

Yellow cards0

Red cards0

Transfer history

FC RyukyuJun 2026 – now-

Jubilo Iwatauntil Jun 2026

Kashiwa Reysol(back from loan)Jan 2026 – Jun 2026

Jubilo IwataJan 2026 – Jan 2026-

Jubilo Iwata(on loan)Feb 2025 – Jan 2026

Kashiwa ReysolFeb 2020 – Feb 2025Free

Albirex Niigata(back from loan)Feb 2017 – Feb 2020

Shimizu S-pulse(on loan)Feb 2016 – Feb 2017

Albirex Niigatauntil Feb 2016

About N. Kawaguchi

Naoki Kawaguchi is a 32-year-old centre-back who plays for FC Ryukyu, born on May 24, 1994 in Niigata, standing 177 cm tall. He is from Japan. FC Ryukyu currently sit 14th of 20 in the J3 League.

This season

In the current season, N. Kawaguchi has made 5 appearances with 0 goals and 0 assists across 350 minutes.

N. Kawaguchi's next match is on October 17, 2026, when FC Ryukyu face Tochigi SC at home in the J3 League.

Field Insider's view

Field Insider currently rates N. Kawaguchi at 13.1 with a Season form score of 4. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 1 career title — among them the J2 League. Full list in the career record.

Career

Across 13 recorded seasons, N. Kawaguchi has totalled 208 club appearances with 2 goals and 4 assists for 4 different clubs. His busiest campaign came in 2015/16, with 29 appearances for Albirex Niigata.

N. Kawaguchi's career has also included time at Jubilo Iwata, Kashiwa Reysol, Albirex Niigata and Shimizu S-pulse.

On the international stage, N. Kawaguchi has represented Japan U17 — 4 caps in our records.

Transfer news

No transfer news found for this player.

Profile

Season stats

Career

Scout report

Output in context · FC Ryukyu finished 14th of 20 · a lower-table side

Watch points