Mario Hermoso

31 yrs · Centre-back · Spain
Associazione Sportiva Roma · Serie A · Foot: left · Height: 184 cm
Risk: ModerateConfidence: MediumSample: HighDevelopment: LowContract: until 30 Jun 2027
Market value
€7.0M
Updated 7 days ago
Estimated acquisition
€2.3M – €5.9M
Estimated · 20–80% range
Model value
€4.2M – €15.7M
Performance-implied · estimated
Projected (24m)
€2.0M – €4.1M
Resale range · estimated
Potential value gap
-€1.8M – €13.4M
Model value − acquisition

Value picture

Where the market, the likely price and the model estimates sit.

Estimated acquisition€2.3M – €5.9M
Model value (performance-implied)€4.2M – €15.7M
Projected value (24 months)€2.0M – €4.1M
Dashed line: current market value (€7.0M). Bars are 20–80% model ranges; tick = median.

The model rates Mario Hermoso's performance-implied value at EUR 4.2M-15.7M, above the estimated acquisition range of EUR 2.3M-5.9M. Its 24-month market value projection is EUR 2.0M-4.1M. Confidence is medium: no event-level data (xG, progressive actions) is available from the current free source, and injury history is unavailable.

Acquisition note: Final year of contract: selling club's leverage is reduced.

Bargain Index: 27

What drives the score. Not a black box: each component and its level.

PerformanceHigh88.9th pct among DEF peers (age-neutral)
AgeUnfavorable31 years
Acquisition costVery favorableest. €3.1M vs market €7.0M
Expected appreciationVery low-59% over ~2 years (model)
Value gapVery largeweak predictor on its own
DevelopmentLow
League translationBig-five leagueleague coefficient 0.93
Tactical fitNot evaluatedRequires event/role data not available from the current free source.
RiskModerate
Data confidenceMedium

Bargain Index = percentile (among all evaluated players) of expected 2-year value relative to estimated cost. See methodology and backtests.

Market value history

Market value ≠ transfer fee ≠ acquisition cost.

Highest recorded: €35.0M

Profile vs positional peers

Percentiles among 1268 evaluated DEF players with 900+ minutes.

Performance (last season, league)

Minutes
2096 (61% of available)
Goals + assists / 90
0.21
Context-adjusted G+A / 90
0.13
xG, xA, progression
Data unavailable
Defensive actions
Data unavailable
Performance percentile
89 (High)

Adjusted = shrunk toward positional baseline for small samples, corrected for team dominance over opponents, expressed relative to positional peers in the same league.

Context

League strength
0.93 (rank 4)
Team strength (Elo)
1638
Opponent strength
1490
Possession, role
Data unavailable

League strength 1.00 = average club of the big-five leagues. Elo includes continental matches.

Potential

Development
Low
Trajectory
improving
Breakout probability
Age > 23
Resale range (24m)
€2.0M – €4.1M

Trajectory drivers: minutes share up 46 pts; changed club; relative output up 236% vs positional peers.

Historical comparables (8): median 2-year value change -66% (IQR -71% to -54%).

Risk profile

Overall: Moderate

  • ⚠Contract ends in 12 months: cheaper, but competition and wage demands likely.
  • ⚠Age 31: resale value typically declines.
  • ⓘInjury history unavailable from current data source.

League translation

What happened to players who moved from this league to the big-five leagues (observed, not a forecast).

Already playing in a big-five league.

Output is relative to positional peers in each league. Movers are a selected group (clubs buy players who fit), so treat this as context, not a guarantee.

Season-by-season (domestic league)

Context-adjusted values are model outputs.

SeasonClubLeaguePosAppsMinMin shareGAG+A/90Adj. G+A/90Opp. EloTeam EloLeague str.
2025/26Associazione Sportiva RomaSerie ACB27209661%320.210.13149016380.93
2024/25Bayer 04 LeverkusenBundesligaCB429210%000.000.03149316810.94
2024/25Associazione Sportiva RomaSerie ACB82467%000.000.05145616680.99
2023/24Atlético de MadridLaligaCB31255675%010.040.04148916671.00
2022/23Atlético de MadridLaligaCB26211262%320.210.14149216560.98
2021/22Atlético de MadridLaligaCB26186855%210.140.10154516771.05
2020/21Atlético de MadridLaligaCB31258376%110.070.05156317281.10
2019/20Atlético de MadridLaligaCB17122036%000.000.02153517591.16
2018/19RCD Espanyol BarcelonaLaligaCB32280682%300.100.10154315591.14
2017/18RCD Espanyol BarcelonaLaligaCB22192956%100.050.06153915231.11

Cups & continental competitions

SeasonCompetitionClubAppsMinGAAvg opp. Elo
2025/26Uefa Europa LeagueAssociazione Sportiva Roma7467001485
2025/26Italy CupAssociazione Sportiva Roma14510—
2024/25Uefa Europa LeagueAssociazione Sportiva Roma4286101520
2024/25Uefa Champions LeagueBayer 04 Leverkusen2128001776
2024/25Italy CupAssociazione Sportiva Roma19000—
2024/25Dfb PokalBayer 04 Leverkusen12000—
2023/24Uefa Champions LeagueAtlético de Madrid9818111673
2023/24Copa Del ReyAtlético de Madrid430800—
2023/24SupercopaAtlético de Madrid1120101810
2022/23Copa Del ReyAtlético de Madrid543700—
2022/23Uefa Champions LeagueAtlético de Madrid3157101585
2021/22Uefa Champions LeagueAtlético de Madrid6426001728
2021/22Copa Del ReyAtlético de Madrid19000—
2021/22SupercopaAtlético de Madrid190001553
2020/21Uefa Champions LeagueAtlético de Madrid6347101730
2020/21Copa Del ReyAtlético de Madrid19000—
2019/20Uefa Champions LeagueAtlético de Madrid5351001591
2019/20Copa Del ReyAtlético de Madrid112000—
2018/19Copa Del ReyRCD Espanyol Barcelona330000—
2017/18Copa Del ReyRCD Espanyol Barcelona218000—

Small continental samples are shown for context only and are not over-weighted.

Historical comparables

Most similar profiles 2+ years ago (same position group) and what happened next. Chosen by similarity only — failures included.

Player (then)AgeValue then~2y laterOutcome
Sead Kolasinac
Ligue 1 · 2023
30€8.0M€7.0Mflat
Benjamin Hübner
Bundesliga · 2020
31€4.8M€1.0Mfell
Ermin Bicakcic
Bundesliga · 2019
29€4.0M€1.5Mfell
Chris Smalling
Serie A · 2022
33€8.0M€2.5Mfell
Vieirinha
Bundesliga · 2015
29€8.0M€3.5Mfell
Vlad Chiricheș
Serie A · 2021
32€3.5M€900kfell
Lars Bender
Bundesliga · 2018
29€13.0M€7.0Mfell
Sergi Roberto
Laliga · 2023
31€5.0M€1.5Mfell

Transfer history

Fees as reported by the source; undisclosed fees shown as unknown, never estimated.

DateFromToFeeMV at time
30 Jun 2025LeverkusenRomaFree / loan€7.0M
31 Jan 2025RomaLeverkusenFree / loan€10.0M
2 Sept 2024Without ClubRomaUnknown€25.0M
1 Jul 2024AtléticoWithout ClubUnknown€25.0M
18 Jul 2019EspanyolAtlético€25.0M€25.0M
12 Jul 2017RM CastillaEspanyol€12.5M€400k
30 Jun 2016Real ValladolidRM CastillaFree / loan€500k
16 Jul 2015RM CastillaReal ValladolidFree / loan€200k
1 Jul 2015Real Madrid CRM CastillaUnknown€200k
1 Jul 2014Real Madrid U19Real Madrid CUnknown€200k
1 Jul 2013Real Madrid U18Real Madrid U19UnknownData unavailable
1 Jul 2012Real Madrid U17Real Madrid U18UnknownData unavailable

MoneyballAI identifies statistical opportunities from available data. A player flagged as a potential bargain is not guaranteed to succeed, to transfer, to rise in value, or to generate resale profit. Market values, fees and contracts come from third-party sources; ranges are model estimates with stated confidence.

Mario Hermoso · MoneyballAI