Domestic-league season · Heerenveen.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Eredivisie | 31 | 1 | 0 | 2668 | 6.85 |
 KNVB Beker | 4 | 0 | 0 | 355 | 6.73 |
Following his move to Heerenveen, Willemsen's current-season form is level with last season (Season 20→22), while his Rating climbed 54→71. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Heerenveen · 8th | 31 | 1 | 0 | 6.85 | 71 | 22 |
| 2024/25 | De Graafschap · 6th | 36 | 1 | 2 | 7.01 | 54 | 20 |
| 2023/24 | De Graafschap · 6th | 22 | 1 | 0 | 6.93 | 51 | 4 |
| 2022/23 | De Graafschap · 10th | 12 | 0 | 0 | — | 45 | 0 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
M. Willemsen is a 23-year-old central defender at Heerenveen, rated 70.5 overall by Field Insider's model, ranking 69th of 284 in the Eredivisie. An emerging talent, he has been an ever-present this season (84.7% of available minutes). His defensive output reads 2.94 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Willemsen.
Judged on this season alone, Willemsen graded 22 — a workmanlike campaign that ranks 31st of 49 of the 49 centre-backs in the Eredivisie, on 4 clean sheets and 2.935 defensive actions per 90.
Year-on-year, that's broadly in line with last season (Season 20 → 22). Across the 4 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 71, top 25% of the 49 centre-backs in the Eredivisie. At 23 Willemsen is still climbing toward his ceiling, and a market index of 32.5 reflects that trajectory.
A career still climbing — Willemsen is at his peak right now, and the curve hasn't flattened.
2.94 tackles, blocks & interceptions per 90 — moderate defensive volume, with 4 clean sheets across 31 appearances. Going forward he chipped in 1 goal and 0 assists — a useful bonus from the back.
With a Rating of 70.5, Willemsen carries the 12th-highest potential of the centre-backs in the Eredivisie (top 25%). Defensively he reads as moderate defensive volume (2.94 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead. With this floor already at 23, the ceiling gets tested by a step up in level — one to track.
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 (~33), then tapers with age. At 23, Willemsen sits on 32.5, at or near its peak. The blue line is Willemsen's projected Rating — 70.5 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.
