Domestic-league season · Ventforet Kofu.
Following his move to Ventforet Kofu, Koide's current-season form is down 64% on last season (Season 22→8), while his Rating eased 42→19. His peak season for form remains 2021/22 (Season 22).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Ventforet Kofu · 13th | 10 | 0 | 0 | — | 19 | 8 |
| 2021/22 | Oita Trinita · 18th | 24 | 1 | 0 | 6.81 | 42 | 22 |
| 2020/21 | Oita Trinita · 11th | 14 | 0 | 3 | 6.75 | 45 | 10 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
Y. Koide is a 31-year-old central defender at Ventforet Kofu, rated 19.2 overall by Field Insider's model, ranking 733rd of 874 in the J3 League. A seasoned veteran, he has been a fringe squad member this season (20.8% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Koide.
Judged on this season alone, Koide graded 8 — a workmanlike campaign that ranks 138th of 204 of the 204 centre-backs in the J3 League, on 3 clean sheets and 0 defensive actions per 90.
Year-on-year, that's a drop on last season (Season 22 → 8). Over the 3 seasons on record his form has held fairly steady, peaking in 2021/22.
On long-term talent our Rating reads 19, 173rd of 204 of the 204 centre-backs in the J3 League. At 31 Koide is into the veteran stage, where the age curve weighs on the projection, and a market index of 6.6 reflects that trajectory.
Below his 2021/22 peak but holding a solid level — the platform for a return is there.
0 tackles, blocks & interceptions per 90 — light defensive volume, with 3 clean sheets across 10 appearances.
With a Rating of 19.2, Koide carries the 173rd-highest potential of the centre-backs in the J3 League of 204 — though on just 10 appearances this season, so the standing rests on a small sample. 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 (0.9× 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 (~15), then tapers with age. At 31, Koide sits on 6.6, past its peak and easing. The blue line is Koide's projected Rating — 19.2 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.
