Petar
Ratkov
CFSerbia · SS Lazio
Image: FootyLogos
Player dossierSerie A
PetarRatkov
CFCentre-ForwardAttack
- Club
- SS Lazio
- League
- Serie A
- Nationality
- Serbia
- Age
- 22
- Height
- 193 cm
- Foot
- Right
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Ratkov at €9M. Model A, which never saw Ratkov during training, estimates €2.2M: the market value is 312% above that estimate.
That is a factor of ×4.12. 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 €1M, 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.
- Apps
- 17
- Minutes
- 576
- Goals
- 0
- Assists
- 0
- Started
- 6/17
- Min / app
- 34
- Cards
- 0Y 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 Ratkov…
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 €9M
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 1,583 attackers
Dashed ring: the attacker median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
60% this player0% attacker median99th 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
- €100k
- Jun 2021
- Peak
- €10M
- Mar 2026
- Model target
- €9M
- May 2026
- Valuations
- 14
- 2 club changes
May 2026: €9M, SS Lazio. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-06-12 | €100k | FK TSC Backa Topola |
| 2021-12-25 | €300k | FK TSC Backa Topola |
| 2022-06-26 | €300k | FK TSC Backa Topola |
| 2022-11-18 | €600k | FK TSC Backa Topola |
| 2023-06-22 | €4M | FK TSC Backa Topola |
| 2023-12-11 | €5M | Red Bull Salzburg |
| 2024-03-11 | €6M | Red Bull Salzburg |
| 2024-05-21 | €5M | Red Bull Salzburg |
| 2024-12-17 | €4M | Red Bull Salzburg |
| 2025-06-06 | €3M | Red Bull Salzburg |
| 2025-09-22 | €5M | Red Bull Salzburg |
| 2025-12-22 | €7M | Red Bull Salzburg |
| 2026-03-24 | €10M | SS Lazio |
| 2026-05-29 | €9M | SS Lazio |
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
- +1.415
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 64% of the 507 Serie A players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 76% of the 1,583 attackers.
See them in the Explorer →Where Ratkov 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
- MandragoraDMACF Fiorentina · Serie A€9M
- BrescianiniCMACF Fiorentina · Serie A€9M
- DallingaCFBologna FC 1909 · Serie A€9M
- MaldiniAMSS Lazio · Serie A€9M
- JovićCFAEK Athens · attackers€9M
- HortaLWSC Braga · attackers€9M
- AcheCF1.FC Köln · attackers€9M
- DakuCFRubin Kazan · attackers€9M
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).