FairValue

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Alberto

Botía

CBSpain · AE Kifisia

№ 53077Emerging €47k +0.06

Player dossierSuper League

AlbertoBotía

CBCentre-BackDefender

Club
AE Kifisia
League
Super League
Nationality
Spain
Age
37
Height
188 cm
Foot
Right
Valued
4 Jun 2026

Reading the valuation

The market values Botía at €50k. Model A, which never saw Botía during training, estimates €47k: 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 €118k, 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 €47k▼ −0.86B €118k
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
11
Minutes
602
Goals
0
Assists
0
Started
7/11
Min / app
55
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 Botía…

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 €50k

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €50kModel A €47k

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 2,065 defenders

Alberto Botía's percentiles among defenders: Goals per 90 18th, Assists per 90 17th, Minutes, two years 3rd, Starts 19th, Minutes, last 365 days 15th, European club minutes 30th18thGoals17thAssists3rdMinutes19thStarts15thRecent30thEurope

Dashed ring: the defender median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

0% this player0% defender median30th 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
€100k
Dec 2007
Peak
€6M
Aug 2011
Model target
€50k
Jun 2026
Valuations
42
8 club changes
Jun 2026€50kAE KifisiaValuation the model is trained to reproduce

Jun 2026: €50k, AE Kifisia. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2007-12-11€100kFC Barcelona B
2008-02-04€300kFC Barcelona B
2009-07-23€600kSporting Gijón
2009-12-01€900kSporting Gijón
2010-01-07€2MSporting Gijón
2010-04-06€3MSporting Gijón
2010-08-20€3MSporting Gijón
2011-02-04€3MSporting Gijón
2011-08-08€6MSporting Gijón
2012-02-05€6MSporting Gijón
2012-08-11€6MSevilla FC
2013-01-11€6MSevilla FC
2013-06-12€5MSevilla FC
2013-08-07€4.5MElche CF
2014-01-23€5MElche CF
2014-07-20€5MSevilla FC
2014-11-11€4MOlympiacos Piraeus
2015-05-10€3.5MOlympiacos Piraeus
2015-09-27€3MOlympiacos Piraeus
2016-06-21€3MOlympiacos Piraeus
2016-12-21€3MOlympiacos Piraeus
2017-05-11€3MOlympiacos Piraeus
2017-12-18€3MOlympiacos Piraeus
2018-05-22€2.5MOlympiacos Piraeus
2019-01-08€3MAl-Hilal SFC
2019-06-01€3MAl-Hilal SFC
2020-01-07€3.5MAl-Wehda FC
2020-04-08€2.8MAl-Wehda FC
2020-09-11€2.6MAl-Wehda FC
2021-01-31€2.2MAl-Wehda FC
2021-06-18€1.7MAl-Wehda FC
2022-06-30€1MAl-Wehda FC
2022-12-02€700kAl-Wehda FC
2023-06-12€500kAl-Wehda FC
2023-09-21€300kAE Kifisia
2023-12-20€300kAE Kifisia
2024-05-30€200kAE Kifisia
2024-09-24€150kAE Kifisia
2024-12-27€100kAE Kifisia
2025-05-16€75kAE Kifisia
2025-12-12€75kAE Kifisia
2026-06-04€50kAE Kifisia

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
+0.060

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 0% of the 356 Super League players.

€20k€150k€1M€7.5M€50kSee them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 0% of the 2,065 defenders.

€20k€200k€2M€20M€50kSee them in the Explorer →

Where Botía 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).