Matus
Bero
CMSlovakia · VfL Bochum
Player dossierBundesliga
MatusBero
CMCentral MidfieldMidfield
- Club
- VfL Bochum
- League
- Bundesliga
- Nationality
- Slovakia
- Age
- 30
- Height
- 181 cm
- Foot
- Right
- Valued
- 1 Jun 2026
BundesligaReading the valuation
The market values Bero at €1M. Model A, which never saw Bero during training, estimates €1.8M: the market value is 46% below that estimate.
That is a factor of ×1.84. 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 €1.4M, 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.
- Apps
- 32
- Minutes
- 2,780
- Goals
- 6
- Assists
- 2
- Started
- 31/32
- Min / app
- 87
- 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 Bero…
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 €1M
Checking APIAsking 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 1,687 midfielders
Dashed ring: the midfielder median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
97% this player69% midfielder median96th percentile
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
- €75k
- Jan 2014
- Peak
- €3.5M
- Oct 2023
- Model target
- €1M
- Jun 2026
- Valuations
- 31
- 3 club changes
Jun 2026: €1M, VfL Bochum. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2014-01-08 | €75k | AS Trencin |
| 2014-06-22 | €125k | AS Trencin |
| 2014-12-25 | €100k | AS Trencin |
| 2015-06-09 | €325k | AS Trencin |
| 2015-12-14 | €550k | AS Trencin |
| 2016-06-28 | €1M | AS Trencin |
| 2016-10-18 | €2.5M | Trabzonspor |
| 2017-01-10 | €3M | Trabzonspor |
| 2017-06-09 | €2.5M | Trabzonspor |
| 2018-02-12 | €2M | Trabzonspor |
| 2018-05-29 | €1.5M | Trabzonspor |
| 2018-12-28 | €2M | Vitesse Arnhem |
| 2019-06-12 | €2M | Vitesse Arnhem |
| 2019-12-18 | €2M | Vitesse Arnhem |
| 2020-04-08 | €1.6M | Vitesse Arnhem |
| 2020-10-14 | €1.6M | Vitesse Arnhem |
| 2021-05-31 | €1.6M | Vitesse Arnhem |
| 2022-01-05 | €1.8M | Vitesse Arnhem |
| 2022-03-17 | €2.5M | Vitesse Arnhem |
| 2022-06-08 | €2.5M | Vitesse Arnhem |
| 2022-11-11 | €2.5M | Vitesse Arnhem |
| 2023-06-23 | €2.3M | Vitesse Arnhem |
| 2023-10-18 | €3.5M | VfL Bochum |
| 2023-12-14 | €3.5M | VfL Bochum |
| 2024-05-29 | €3.5M | VfL Bochum |
| 2024-12-20 | €3M | VfL Bochum |
| 2025-03-27 | €3.5M | VfL Bochum |
| 2025-06-05 | €3M | VfL Bochum |
| 2025-12-16 | €2M | VfL Bochum |
| 2026-03-13 | €1.5M | VfL Bochum |
| 2026-06-01 | €1M | VfL Bochum |
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
- −0.607
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 →Bundesliga451 players · median €5M
Valued above 7% of the 451 Bundesliga players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 32% of the 1,687 midfielders.
See them in the Explorer →Where Bero appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- DzekoCFFC Schalke 04 · Bundesliga€1M
- GulácsiGKRB Leipzig · Bundesliga€1M
- GouweleeuwCBFC Augsburg · Bundesliga€1M
- BuschRB1.FC Heidenheim 1846 · Bundesliga€1M
- ParejoCMVillarreal CF · midfielders€1M
- DemirbayCMKasimpasa · midfielders€1M
- Oxlade-ChamberlainCMCeltic FC · midfielders€1M
- VecinoCMCelta de Vigo · midfielders€1M
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).