Devyne

Rensch

RBNetherlands · AS Roma

№ 557407Established €14.7M −0.55

Close-up

Image: FootyLogos

Player dossierSerie A

DevyneRensch

RBRight-BackDefender

Club: AS Roma
League: Serie A
Nationality: Netherlands
Age: 23
Height: 181 cm
Foot: Right
Valued: 29 May 2026

Reading the valuation

The market values Rensch at €8.5M. Model A, which never saw Rensch during training, estimates €14.7M: the market value is 42% below that estimate.

That is a factor of ×1.73. 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 €19.8M, 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.

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: 76
Minutes: 4,474
Goals: 2
Assists: 7
Started: 49/76
Min / app: 59
Cards: 5Y 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 Rensch…

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 €8.5M

Checking API

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

Dashed ring: the defender median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

34% this player0% defender median97th 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: €250k; Aug 2020
Peak: €12M; Dec 2024
Model target: €8.5M; May 2026
Valuations: 17; 2 club changes

May 2026€8.5MAS RomaValuation the model is trained to reproduce

May 2026: €8.5M, AS Roma. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table

Date	Market value	Club
2020-08-12	€250k	Ajax Amsterdam U21
2020-10-24	€2.3M	Ajax Amsterdam U21
2020-12-31	€4M	Ajax Amsterdam
2021-03-09	€5.5M	Ajax Amsterdam
2021-05-19	€8M	Ajax Amsterdam
2021-10-04	€10M	Ajax Amsterdam
2022-01-05	€10M	Ajax Amsterdam
2022-03-17	€8M	Ajax Amsterdam
2022-06-08	€8M	Ajax Amsterdam
2022-11-11	€8M	Ajax Amsterdam
2023-06-23	€8M	Ajax Amsterdam
2023-12-15	€8M	Ajax Amsterdam
2024-05-31	€10M	Ajax Amsterdam
2024-12-17	€12M	Ajax Amsterdam
2025-06-17	€10M	AS Roma
2025-12-23	€8.5M	AS Roma
2026-05-29	€8.5M	AS Roma

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: −0.550

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 →

Serie A507 players · median €5.5M

Valued above 63% of the 507 Serie A players.

See them in the Explorer →

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

Valued above 80% of the 2,065 defenders.

See them in the Explorer →

Where Rensch appears

TerminalSerie A in the Player Explorer
TerminalSerie A on the League Landscape

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).