Domestic-league season · Kawasaki Frontale.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 J1 League | 24 | 0 | 1 | 1958 | 7 |
Maruyama's current-season form is up 300% on last season (Season 5→20), while his Rating climbed 9→11. His peak season for form remains 2020/21 (Season 65).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Kawasaki Frontale · 8th | 24 | 0 | 1 | 7 | 11 | 20 |
| 2024/25 | Kawasaki Frontale · 8th | 7 | 0 | 0 | 6.97 | 9 | 5 |
| 2023/24 | Nagoya Grampus · 6th | 26 | 1 | 0 | 6.74 | 11 | 15 |
| 2022/23 | Nagoya Grampus · 8th | 25 | 0 | 0 | 6.98 | 20 | 39 |
| 2021/22 | Nagoya Grampus · 5th | 17 | 1 | 0 | 7.06 | 21 | 35 |
| 2020/21 | Nagoya Grampus · 3rd | 34 | 1 | 0 | 7.11 | 33 | 65 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
Y. Maruyama is a 37-year-old central defender at Kawasaki Frontale, rated 11 overall by Field Insider's model, ranking 835th of 874 in the J1 League. A seasoned veteran, he has been a rotation option this season (57.3% of available minutes). His defensive output reads 3.03 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Maruyama.
Judged on this season alone, Maruyama graded 20 — a strong campaign that ranks top 24% of the 204 centre-backs in the J1 League, on 5 clean sheets and 3.034 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 5 → 20). Over the 6 seasons on record his form has drifted down, peaking in 2020/21.
On long-term talent our Rating reads 11, 197th of 204 of the 204 centre-backs in the J1 League. At 37 Maruyama is into the veteran stage, where the age curve weighs on the projection, and a market index of 2.1 reflects that trajectory.
Past his 2020/21 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
3.03 tackles, blocks & interceptions per 90 — moderate defensive volume, with 5 clean sheets across 24 appearances. Going forward he chipped in 0 goals and 1 assist — a useful bonus from the back.
With a Rating of 11, Maruyama carries the 197th-highest potential of the centre-backs in the J1 League of 204. Defensively he reads as moderate defensive volume (3.03 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.5× and falling).
Generated from Field Insider's rating model · AI-written analysis to follow.
The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~8), then tapers with age. At 37, Maruyama sits on 2.1, past its peak and easing. The blue line is Maruyama's projected Rating — 11 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.
No transfer news found for this player.
