FairValue

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Taxiarchis

Fountas

LWGreece · OFI Crete

№ 192409Emerging €623k +1.06

Player dossierSuper League

TaxiarchisFountas

LWLeft WingerAttack

Club
OFI Crete
League
Super League
Nationality
Greece
Age
30
Height
170 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Fountas at €1.8M. Model A, which never saw Fountas during training, estimates €623k: the market value is 189% above that estimate.

That is a factor of ×2.89. 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 €900k, 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.

▲ +1.06A €623k▲ +0.69B €900k
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
56
Minutes
3,786
Goals
17
Assists
1
Started
49/56
Min / app
68
Cards
12Y 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 Fountas…

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 €1.8M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €1.8MModel A €623k

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

Taxiarchis Fountas's percentiles among attackers: Goals per 90 77th, Assists per 90 11th, Minutes, two years 78th, Starts 91st, Minutes, last 365 days 64th, European club minutes 28th77thGoals11thAssists78thMinutes91stStarts64thRecent28thEurope

Dashed ring: the attacker median (50th percentile)

Starts

Share of appearances started rather than entered from the bench.

88% this player59% attacker median91st 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
€200k
Dec 2011
Peak
€5M
Nov 2022
Model target
€1.8M
Jun 2026
Valuations
39
11 club changes
Jun 2026€1.8MOFI CreteValuation the model is trained to reproduce

Jun 2026: €1.8M, OFI Crete. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2011-12-15€200kAEK Athens
2012-01-25€200kAEK Athens
2012-02-26€200kAEK Athens
2012-09-21€550kAEK Athens
2013-02-10€800kAEK Athens
2013-12-27€500kRed Bull Salzburg
2014-06-20€500kSV Grödig
2014-11-11€500kPanionios FC
2015-05-10€600kPanionios FC
2015-09-27€900kAsteras Tripolis
2016-06-21€750kAsteras Tripolis
2016-12-21€750kPanionios FC
2017-05-11€750kPanionios FC
2017-10-19€450kSG Sonnenhof Großaspach
2018-01-19€350kSG Sonnenhof Großaspach
2018-06-08€350kSG Sonnenhof Großaspach
2018-12-19€400kSKN St. Pölten
2019-06-03€500kSKN St. Pölten
2019-09-03€1MRapid Vienna
2019-12-16€2MRapid Vienna
2020-04-08€1.6MRapid Vienna
2020-07-22€3MRapid Vienna
2020-10-12€4MRapid Vienna
2020-12-21€3MRapid Vienna
2021-06-02€3MRapid Vienna
2021-12-16€3MRapid Vienna
2022-08-18€4MD.C. United
2022-11-08€5MD.C. United
2023-09-27€4.8MTrabzonspor
2023-12-21€4.2MTrabzonspor
2024-03-15€3.7MTrabzonspor
2024-05-31€3.7MTrabzonspor
2024-09-26€3MOFI Crete
2024-12-18€3MOFI Crete
2025-05-23€3MOFI Crete
2025-09-23€2.5MOFI Crete
2025-12-12€2MOFI Crete
2026-03-06€1.8MOFI Crete
2026-06-04€1.8MOFI Crete

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
+1.061

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 →

Super League356 players · median €600k

Valued above 77% of the 356 Super League players.

€20k€150k€1M€7.5M€1.8MSee them in the Explorer →

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

Valued above 43% of the 1,583 attackers.

€20k€300k€5M€75M€1.8MSee them in the Explorer →

Where Fountas 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).