FairValue

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

Guiagon

LWCote d'Ivoire · Royal Charleroi SC

№ 624913Established €4.3M +0.16

Player dossierPro League

ParfaitGuiagon

LWLeft WingerAttack

Club
Royal Charleroi SC
League
Pro League
Nationality
Cote d'Ivoire
Age
25
Height
165 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Guiagon at €5M. Model A, which never saw Guiagon during training, estimates €4.3M: the market value is 17% above that estimate.

That is a factor of ×1.17. 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 €6.3M, 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.

▲ +0.16A €4.3M▼ −0.24B €6.3M
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
61
Minutes
4,745
Goals
14
Assists
10
Started
56/61
Min / app
78
Cards
14Y 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 Guiagon…

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 €5M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €5MModel A €4.3M

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

Parfait Guiagon's percentiles among attackers: Goals per 90 51st, Assists per 90 67th, Minutes, two years 89th, Starts 96th, Minutes, last 365 days 92nd, European club minutes 62nd51stGoals67thAssists89thMinutes96thStarts92ndRecent62ndEurope

Dashed ring: the attacker median (50th percentile)

Starts

Share of appearances started rather than entered from the bench.

92% this player59% attacker median96th percentile

5%peer deciles · median line · this player ●100%

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
€250k
Dec 2020
Peak
€5M
Mar 2026
Model target
€5M
Jun 2026
Valuations
16
3 club changes
Jun 2026€5MRoyal Charleroi SCValuation the model is trained to reproduce

Jun 2026: €5M, Royal Charleroi SC. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2020-12-26€250kBeitar Tel Aviv Bat Yam
2021-05-29€250kBeitar Tel Aviv Bat Yam
2021-12-31€600kMaccabi Netanya
2022-06-04€900kMaccabi Netanya
2022-09-24€1.2MMaccabi Tel Aviv
2022-12-20€1.2MMaccabi Tel Aviv
2023-05-29€1.4MMaccabi Tel Aviv
2023-10-23€2MRoyal Charleroi SC
2023-12-19€1.8MRoyal Charleroi SC
2024-06-04€1.8MRoyal Charleroi SC
2024-12-11€2MRoyal Charleroi SC
2025-06-12€3MRoyal Charleroi SC
2025-10-01€4MRoyal Charleroi SC
2025-12-10€4MRoyal Charleroi SC
2026-03-13€5MRoyal Charleroi SC
2026-06-04€5MRoyal Charleroi SC

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
+0.155

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 →

Pro League350 players · median €1.8M

Valued above 85% of the 350 Pro League players.

€100k€750k€5M€30M€5MSee them in the Explorer →

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

Valued above 64% of the 1,583 attackers.

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

Where Guiagon 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).