Domestic-league season · Machida Zelvia.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 J1 League | 19 | 0 | 0 | 640 | 6.62 |
 J-League Cup | 2 | 0 | 0 | 191 | — |
 AFC Champions League Elite | 3 | 1 | 0 | 190 | 7.27 |
Shirasaki's current-season form is down 60% on last season (Season 15→6), while his Rating eased 22→12. His peak season for form remains 2022/23 (Season 37).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Machida Zelvia · 6th | 19 | 0 | 0 | 6.62 | 12 | 6 |
| 2024/25 | Machida Zelvia · 3rd | 14 | 1 | 1 | 7.01 | 22 | 15 |
| 2022/23 | Shimizu S-pulse · 17th | 31 | 3 | 1 | 6.87 | 35 | 37 |
| 2021/22 | Sagan Tosu · 7th | 29 | 3 | 2 | 6.69 | 38 | 23 |
| 2020/21 | Kashima · 5th | 9 | 2 | 0 | 6.85 | 36 | 6 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
R. Shirasaki is a 33-year-old defensive midfielder at Machida Zelvia, rated 12.1 overall by Field Insider's model, ranking 818th of 874 in the J3 League. A seasoned veteran, he has been a fringe squad member this season (18.7% of available minutes). His defensive output reads 3.52 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Shirasaki.
Judged on this season alone, Shirasaki graded 6 — a workmanlike campaign that ranks 56th of 56 of the 56 defensive midfielders in the J3 League, on 0 goals, 0 assists and 3.516 defensive actions per 90.
Year-on-year, that's a drop on last season (Season 15 → 6). Over the 5 seasons on record his form has held fairly steady, peaking in 2022/23.
On long-term talent our Rating reads 12, 52nd of 56 of the 56 defensive midfielders in the J3 League. At 33 Shirasaki is into the veteran stage, where the age curve weighs on the projection, and a market index of 3.2 reflects that trajectory.
Past his 2022/23 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
3.52 tackles, blocks & interceptions per 90 — solid defensive volume, with 3 clean sheets across 19 appearances. Behind an upper-table side (6th of 20) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume.
With a Rating of 12.1, Shirasaki carries the 52nd-highest potential of the defensive midfielders in the J3 League of 56 — though on just 19 appearances this season, so the standing rests on a small sample. Defensively he reads as solid defensive volume (3.52 tackles, blocks & interceptions per 90). Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.7× 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 (~9), then tapers with age. At 33, Shirasaki sits on 3.2, past its peak and easing. The blue line is Shirasaki's projected Rating — 12.1 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.
No transfer news found for this player.
