FairValue

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Portrait of Jordy Clasie

Jordy

Clasie

DMNetherlands · AZ Alkmaar

№ 104223Emerging €424k +0.64

Image: FootyLogos

Player dossierEredivisie

JordyClasie

DMDefensive MidfieldMidfield

Club
AZ Alkmaar
League
Eredivisie
Nationality
Netherlands
Age
34
Height
169 cm
Foot
Right
Valued
28 May 2026

Reading the valuation

The market values Clasie at €800k. Model A, which never saw Clasie during training, estimates €424k: the market value is 89% above that estimate.

That is a factor of ×1.89. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.

Without league and club, Model B estimates €680k, closer to the market here, although it is usually further off (typical miss ×2.07).

A gap describes the model's arithmetic for this player's inputs, not what the player is worth.

▲ +0.64A €424k▲ +0.16B €680k
Pitch length is a log value scale fitted to this player's figures. ● observed · ◇ Model A · dashed ◇ Model B · each arc is a residual, log(observed) − log(estimate).
Apps
54
Minutes
4,123
Goals
2
Assists
5
Started
48/54
Min / app
76
Cards
9Y 0R

Club matches, two years to the valuation date

The Valuation Journey

What moves Model A

Asking the prediction API to explain Model A for Clasie…

SHAP describes the model's arithmetic for this player's inputs, not what causes market value. Model B can be explained only by the live service; Model A also has a published explanation for the research players.

Model A vs Model B against the observed €800k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €800kModel A €424k

Asking the prediction API…

Held-out estimates come from cross-validation, with this player outside the training data: the honest comparison. Served models were refitted on every player, this one included, so they sit closer to the market. Shaded band: Model A's typical miss (×1.50 either way).

Player traitspercentiles vs 1,687 midfielders

Jordy Clasie's percentiles among midfielders: Goals per 90 31st, Assists per 90 56th, Minutes, two years 76th, Starts 85th, Minutes, last 365 days 36th, European club minutes 91st31stGoals56thAssists76thMinutes85thStarts36thRecent91stEurope

Dashed ring: the midfielder median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

25% this player0% midfielder median91st percentile

0%peer deciles · median line · this player ●85%

No passing, progression or defensive actions exist in the dataset, so no trait claims to measure them.

Valuation history every Transfermarkt valuation on record

First valuation
€50k
Aug 2010
Peak
€11M
Feb 2016
Model target
€800k
May 2026
Valuations
38
5 club changes
May 2026€800kAZ AlkmaarValuation the model is trained to reproduce

May 2026: €800k, AZ Alkmaar. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2010-08-20€50kSBV Excelsior
2010-09-06€150kSBV Excelsior
2011-01-10€350kSBV Excelsior
2011-06-30€500kFeyenoord Rotterdam
2011-09-07€750kFeyenoord Rotterdam
2012-01-10€3MFeyenoord Rotterdam
2012-06-30€5MFeyenoord Rotterdam
2013-01-09€6.5MFeyenoord Rotterdam
2013-05-28€6.5MFeyenoord Rotterdam
2014-02-11€7MFeyenoord Rotterdam
2014-08-11€8MFeyenoord Rotterdam
2015-02-16€8MFeyenoord Rotterdam
2015-07-01€10MFeyenoord Rotterdam
2016-02-09€11MSouthampton FC
2016-08-01€11MSouthampton FC
2017-02-20€10MSouthampton FC
2017-06-28€10MSouthampton FC
2018-01-09€7.5MClub Brugge KV
2018-06-03€6.5MClub Brugge KV
2018-12-28€6.5MFeyenoord Rotterdam
2019-06-12€5.5MFeyenoord Rotterdam
2019-09-19€3MAZ Alkmaar
2019-12-18€3MAZ Alkmaar
2020-04-08€2.4MAZ Alkmaar
2020-10-14€2.4MAZ Alkmaar
2021-05-19€2MAZ Alkmaar
2022-01-05€1.8MAZ Alkmaar
2022-03-17€2.5MAZ Alkmaar
2022-06-08€2.5MAZ Alkmaar
2022-11-11€2.5MAZ Alkmaar
2023-03-17€3MAZ Alkmaar
2023-06-23€3MAZ Alkmaar
2023-12-15€3MAZ Alkmaar
2024-05-31€2.5MAZ Alkmaar
2024-12-17€2MAZ Alkmaar
2025-05-28€1.5MAZ Alkmaar
2025-12-02€1.2MAZ Alkmaar
2026-05-28€800kAZ Alkmaar

Audit context group-level, not about this player

Audit group
UEFA
Population gap, Model A
+0.093 95% CI +0.063 to +0.124
This player, market vs held-out A
+0.635

The group comes from first-listed citizenship and is never a model input. Across the population, non-UEFA players' market values sit about 10% above Model A's held-out estimates, relative to UEFA players in the same leagues. One player's residual says nothing about that pattern (typical miss ×1.50), and none of it is evidence of discrimination: the target may itself be biased. Open the Fairness Audit

In context observed value among comparable players in this build

All players in the Terminal →

Eredivisie425 players · median €1M

Valued above 40% of the 425 Eredivisie players.

€75k€500k€3M€20M€800kSee them in the Explorer →

Midfielders, all leagues1,687 players · median €2M

Valued above 27% of the 1,687 midfielders.

€20k€200k€2M€20M€800kSee them in the Explorer →

Where Clasie appears

Watchlists and the comparison tray are kept in this browser only.

Near this valuation closest observed values: same league, then same position

Counts and ranks of observed Transfermarkt values only; model errors are never ranked here. Full player export: Every player in the modelling population (D-011).