Domestic-league season · Yokohama FC.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 J1 League | 23 | 0 | 1 | 1965 | 6.81 |
 J-League Cup | 1 | 0 | 0 | 73 | — |
Following his move to Yokohama FC, Yamazaki's current-season form is up 19% on last season (Season 26→31), while his Rating eased 37→27. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Yokohama FC · 18th | 23 | 0 | 1 | 6.81 | 27 | 31 |
| 2024/25 | Sagan Tosu · 20th | 30 | 1 | 0 | 6.71 | 37 | 26 |
| 2023/24 | Sagan Tosu · 14th | 33 | 0 | 0 | 6.95 | 45 | 30 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
K. Yamazaki is a 30-year-old central defender at Yokohama FC, rated 27.2 overall by Field Insider's model, ranking 603rd of 874 in the J3 League. An experienced operator, he has been a rotation option this season (57.5% of available minutes). His defensive output reads 4.08 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Yamazaki.
Judged on this season alone, Yamazaki graded 31 — an excellent campaign that ranks top 12% of the 204 centre-backs in the J3 League, on 7 clean sheets and 4.076 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 26 → 31). Across the 3 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 27, 142nd of 204 of the 204 centre-backs in the J3 League. At 30 Yamazaki is into the veteran stage, where the age curve weighs on the projection, and a market index of 10.3 reflects that trajectory.
Yamazaki is operating at his career peak — the 2025/26 level is the level.
4.08 tackles, blocks & interceptions per 90 — solid defensive volume, with 7 clean sheets across 23 appearances. Doing that for a relegation-threatened side (18th 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. Going forward he chipped in 0 goals and 1 assist — a useful bonus from the back.
With a Rating of 27.2, Yamazaki carries the 142nd-highest potential of the centre-backs in the J3 League of 204, and he is posting that for a relegation-threatened side (Yokohama FC finished 18th of 20) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. Defensively he reads as solid defensive volume (4.08 tackles, blocks & interceptions per 90). Experienced and reliable, but the value curve is easing (1× now → 0.7× projected in three years).
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 (~21), then tapers with age. At 30, Yamazaki sits on 10.3, past its peak and easing. The blue line is Yamazaki's projected Rating — 27.2 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.
