FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Witi

LWMozambique · CD Nacional

№ 352425Emerging €472k +0.06

Player dossierLiga Portugal

Witi

LWLeft WingerAttack

Club
CD Nacional
League
Liga Portugal
Nationality
Mozambique
Age
29
Height
177 cm
Foot
Left
Valued
28 May 2026

Reading the valuation

The market values Witi at €500k. Model A, which never saw Witi during training, estimates €472k: the market value is 6% above that estimate.

That is a factor of ×1.06. Model A's typical held-out miss is ×1.50 either way, so this gap is within its usual error.

Without league and club, Model B estimates €640k, further from the market. Model B is usually further off (typical miss ×2.07): league and club explain much of how the market prices players.

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

▲ +0.06A €472k▼ −0.25B €640k
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
26
Minutes
935
Goals
1
Assists
1
Started
10/26
Min / app
36
Cards
3Y 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 Witi…

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 €500k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €500kModel A €472k

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 1,583 attackers

Witi's percentiles among attackers: Goals per 90 13th, Assists per 90 30th, Minutes, two years 17th, Starts 19th, Minutes, last 365 days 34th, European club minutes 28th13thGoals30thAssists17thMinutes19thStarts34thRecent28thEurope

Dashed ring: the attacker median (50th percentile)

Minutes, last 365 days

Club minutes in the final year of the window: recent involvement, or the absence of it.

935 this player1,301 attacker median34th percentile

0peer deciles · median line · this player ●4,703

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
€300k
Feb 2015
Peak
€850k
Jun 2024
Model target
€500k
May 2026
Valuations
25
3 club changes
May 2026€500kCD NacionalValuation the model is trained to reproduce

May 2026: €500k, CD Nacional. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2015-02-17€300kCD Nacional
2016-02-24€300kCD Nacional
2016-07-29€400kCD Nacional
2017-02-22€400kCD Nacional
2017-06-26€300kCD Nacional
2017-09-08€300kCD Nacional
2018-02-23€250kCD Nacional
2018-06-29€175kCD Nacional
2019-01-11€500kCD Nacional
2019-06-07€500kCD Nacional
2019-12-31€450kCD Nacional
2020-04-08€350kCD Nacional
2020-08-17€500kCD Nacional
2021-01-28€500kCD Nacional
2021-05-21€400kCD Nacional
2022-04-01€400kCD Nacional
2022-06-27€275kCD Nacional
2022-12-28€275kCD Nacional
2023-06-28€350kCD Nacional
2023-12-14€450kCD Nacional
2024-06-20€850kCD Nacional
2024-11-18€600kDibba Al-Hisn SC
2025-05-29€500kAl-Orooba FC
2025-12-18€500kCD Nacional
2026-05-28€500kCD Nacional

Audit context group-level, not about this player

Audit group
non-UEFA
Population gap, Model A
+0.093 95% CI +0.063 to +0.124
This player, market vs held-out A
+0.058

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 →

Liga Portugal423 players · median €1M

Valued above 20% of the 423 Liga Portugal players.

€20k€200k€2M€20M€500kSee them in the Explorer →

Attackers, all leagues1,583 players · median €2.5M

Valued above 15% of the 1,583 attackers.

€20k€300k€5M€75M€500kSee them in the Explorer →

Where Witi 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).