Warmerdam's current-season form is down 76% on last season (Season 46→11), while his Rating eased 59→44. His peak season for form remains 2022/23 (Season 46).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2026/27	De Graafschap · 17th	3	1	0	6.93	44	11
2024/25	De Graafschap · 6th	36	5	3	7.12	59	46
2023/24	De Graafschap · 6th	37	4	2	6.96	63	41
2022/23	Jong Ajax · 13th	36	5	0	7	60	46
2021/22	Jong Ajax · 7th	24	0	0	6.7	54	11

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 1 earlier season and 1 youth-team spell in the full career.

Scout report

Squad depthCentral midfielder

D. Warmerdam is a 24-year-old central midfielder at De Graafschap, rated 44.4 overall by Field Insider's model. An emerging talent, he has been a fringe squad member this season (15.9% of available minutes). His defensive output reads 3.64 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Warmerdam.

On the season, Warmerdam graded 11 for current form (age-blind), on 1 goal, 0 assists and 3.64 defensive actions per 90.

Year-on-year, that's a drop on last season (Season 46 → 11). Over the 6 seasons on record his form has drifted down, peaking in 2022/23.

On long-term talent our Rating reads 44. At 24 Warmerdam is in his prime years, and a market index of 13.1 reflects that trajectory.

From the career report

Read the full career report →

Warmerdam is operating at his career peak — the 2022/23 level is the level.

Peak: 2022/23Holding levelBreakout: 2022/23

44.4

Ratingi

developing / rotation level

10.9

Seasoni

below regular-starter level

15.9%

Minutes

limited game time

3.64

Def. actions / 90

solid defensive volume

Output in context · De Graafschap finished 17th of 20 · a lower-table side

Apps

3.64

Def. / 90

Tackles

Interceptions

Clean sheets

3.64 tackles, blocks & interceptions per 90 — solid defensive volume across 3 appearances. Doing that for a lower-table side (17th 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 1 goal and 0 assists — a useful bonus from the back.

Strengths

Attacking threat. Chips in from deep: 0.33 goal involvements per 90, useful for a central midfielder.
Defensive volume. 3.64 tackles, blocks & interceptions per 90 — does the unseen work.

Watch points

Game time. Only 15.9% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 44.4 overall — developing / rotation level. Defensively he reads as solid defensive volume (3.64 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead.

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %15.9%

Available fixtures3 of 3

Goals / 900.331

Assists / 900

Goal contribution / 900.331

Defensive actions / 903.64

Player flow

Goal involvements1

Shot conversion %100

Shot accuracy %33.3

Pass accuracy %91

Dribble success %50

Cards / 900.662

Foul involvement / 902.316

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

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 (~13), then tapers with age. At 24, Warmerdam sits on 13.1, at or near its peak. The blue line is Warmerdam's projected Rating — 44.4 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.

Transfer history

De GraafschapJun 2026 – nowFree

PPSIM YogyakartaAug 2025 – Jun 2026Free Transfer

De GraafschapJul 2023 – Aug 2025Free

Ajaxuntil Jul 2023

About D. Warmerdam

Donny Warmerdam is a 24-year-old central midfielder who plays for De Graafschap, born on January 2, 2002 in Sassenheim, standing 174 cm tall. He is from Netherlands. De Graafschap currently sit 17th of 20 in the Eerste Divisie.

This season

In the current season, D. Warmerdam has made 3 appearances with 1 goal and 0 assists across 272 minutes, with 2 yellow cards.

D. Warmerdam's next match is on August 29, 2026, when De Graafschap face Almere City FC at home in the Eerste Divisie.

Field Insider's view

Field Insider currently rates D. Warmerdam at 44.4 with a Season form score of 10.9. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 1 career title — among them the Eredivisie. Full list in the career record.

Career

Across 7 recorded seasons, D. Warmerdam has totalled 169 club appearances with 17 goals and 6 assists for 3 different clubs. His busiest campaign came in 2023/24, with 37 appearances for De Graafschap.

D. Warmerdam's career has also included time at PPSIM Yogyakarta and Ajax.

Transfer news

No transfer news found for this player.