FairValue

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Johan

Mojica

LBColombia · RCD Mallorca

№ 262939Emerging €1.3M +0.15

Player dossierLaLiga

JohanMojica

LBLeft-BackDefender

Club
RCD Mallorca
League
LaLiga
Nationality
Colombia
Age
33
Height
184 cm
Foot
Left
Valued
5 Jun 2026

Reading the valuation

The market values Mojica at €1.5M. Model A, which never saw Mojica during training, estimates €1.3M: 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 €1.2M, 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.

▲ +0.15A €1.3M▲ +0.21B €1.2M
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
72
Minutes
5,569
Goals
1
Assists
6
Started
61/72
Min / app
77
Cards
11Y 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 Mojica…

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 €1.5M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €1.5MModel A €1.3M

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 2,065 defenders

Johan Mojica's percentiles among defenders: Goals per 90 37th, Assists per 90 76th, Minutes, two years 89th, Starts 55th, Minutes, last 365 days 82nd, European club minutes 30th37thGoals76thAssists89thMinutes55thStarts82ndRecent30thEurope

Dashed ring: the defender median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

5,569 this player2,860 defender median89th percentile

451peer deciles · median line · this player ●9,111

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
Jul 2013
Peak
€5M
Jul 2018
Model target
€1.5M
Jun 2026
Valuations
33
8 club changes
Jun 2026€1.5MRCD MallorcaValuation the model is trained to reproduce

Jun 2026: €1.5M, RCD Mallorca. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2013-07-25€300kRayo Vallecano
2014-01-23€500kRayo Vallecano
2014-08-04€500kReal Valladolid CF
2015-01-08€1.5MReal Valladolid CF
2015-07-01€2MReal Valladolid CF
2016-02-22€1.8MReal Valladolid CF
2016-07-15€1.8MRayo Vallecano
2016-10-27€1.5MRayo Vallecano
2017-01-24€1MRayo Vallecano
2017-06-29€1MGirona FC
2018-01-01€2MGirona FC
2018-03-22€4MGirona FC
2018-05-30€4MGirona FC
2018-07-16€5MGirona FC
2018-12-21€4MGirona FC
2019-06-11€3MGirona FC
2019-09-10€2MGirona FC
2019-12-20€2MGirona FC
2020-04-08€1.6MGirona FC
2020-10-29€2.5MAtalanta BC
2020-12-29€2.5MAtalanta BC
2021-06-10€2MElche CF
2021-10-13€3MElche CF
2021-12-30€3MElche CF
2022-06-03€5MElche CF
2022-11-07€5MVillarreal CF
2023-06-13€3MVillarreal CF
2023-12-22€2.5MCA Osasuna
2024-06-07€2.2MCA Osasuna
2024-12-27€2.2MRCD Mallorca
2025-06-09€2MRCD Mallorca
2025-12-12€1.8MRCD Mallorca
2026-06-05€1.5MRCD Mallorca

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
+0.154

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 →

LaLiga509 players · median €4M

Valued above 20% of the 509 LaLiga players.

€100k€1M€10M€100M€1.5MSee them in the Explorer →

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

Valued above 43% of the 2,065 defenders.

€20k€200k€2M€20M€1.5MSee them in the Explorer →

Where Mojica 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).