Yann
Sommer
GKSwitzerland · Inter Milan
Close-up
Image: FootyLogos
Player dossierSerie A
YannSommer
GKGoalkeeperGoalkeeper
- Club
- Inter Milan
- League
- Serie A
- Nationality
- Switzerland
- Age
- 37
- Height
- 183 cm
- Foot
- Right
- Valued
- 29 May 2026
Serie AReading the valuation
The market values Sommer at €2M. Model A, which never saw Sommer during training, estimates €3.2M: the market value is 37% below that estimate.
That is a factor of ×1.59. 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 €2M, 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
- 96
- Minutes
- 8,661
- Started
- 96/96
- Min / app
- 90
- 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 Sommer…
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 €2M
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 485 goalkeepers
Dashed ring: the goalkeeper median (50th percentile)
Minutes, two years
Total club minutes in the two-year window: how much the player was used.
8,661 this player2,790 goalkeeper 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
- €50k
- Jul 2006
- Peak
- €13M
- Oct 2018
- Model target
- €2M
- May 2026
- Valuations
- 47
- 7 club changes
May 2026: €2M, Inter Milan. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2006-07-22 | €50k | FC Basel 1893 |
| 2006-10-16 | €100k | FC Basel 1893 |
| 2008-03-23 | €200k | FC Vaduz |
| 2008-07-07 | €350k | FC Vaduz |
| 2008-10-15 | €500k | FC Vaduz |
| 2009-06-27 | €700k | FC Basel 1893 |
| 2009-11-29 | €900k | Grasshopper Club Zurich |
| 2010-02-02 | €1.1M | Grasshopper Club Zurich |
| 2010-04-23 | €1.5M | Grasshopper Club Zurich |
| 2011-06-15 | €1.5M | FC Basel 1893 |
| 2011-12-15 | €2.5M | FC Basel 1893 |
| 2012-03-23 | €3.5M | FC Basel 1893 |
| 2012-05-30 | €4.5M | FC Basel 1893 |
| 2012-08-10 | €5.5M | FC Basel 1893 |
| 2012-10-29 | €5M | FC Basel 1893 |
| 2013-04-14 | €6M | FC Basel 1893 |
| 2013-06-17 | €8M | FC Basel 1893 |
| 2014-02-14 | €8M | FC Basel 1893 |
| 2014-07-10 | €8M | Borussia Mönchengladbach |
| 2014-08-21 | €10M | Borussia Mönchengladbach |
| 2015-02-04 | €10M | Borussia Mönchengladbach |
| 2015-07-01 | €12M | Borussia Mönchengladbach |
| 2016-02-15 | €10M | Borussia Mönchengladbach |
| 2016-06-01 | €10M | Borussia Mönchengladbach |
| 2016-07-22 | €10M | Borussia Mönchengladbach |
| 2017-02-07 | €9M | Borussia Mönchengladbach |
| 2017-06-19 | €9M | Borussia Mönchengladbach |
| 2017-12-28 | €8M | Borussia Mönchengladbach |
| 2018-06-05 | €8M | Borussia Mönchengladbach |
| 2018-07-16 | €10M | Borussia Mönchengladbach |
| 2018-10-22 | €13M | Borussia Mönchengladbach |
| 2018-12-18 | €13M | Borussia Mönchengladbach |
| 2019-06-05 | €12M | Borussia Mönchengladbach |
| 2019-12-17 | €12M | Borussia Mönchengladbach |
| 2020-04-08 | €9.5M | Borussia Mönchengladbach |
| 2021-02-10 | €7M | Borussia Mönchengladbach |
| 2021-05-25 | €6M | Borussia Mönchengladbach |
| 2021-12-22 | €5M | Borussia Mönchengladbach |
| 2022-06-09 | €5M | Borussia Mönchengladbach |
| 2022-11-09 | €5M | Borussia Mönchengladbach |
| 2023-06-22 | €5M | Bayern Munich |
| 2023-12-20 | €5M | Inter Milan |
| 2024-06-05 | €5M | Inter Milan |
| 2024-12-18 | €4M | Inter Milan |
| 2025-06-17 | €4M | Inter Milan |
| 2025-12-23 | €2.5M | Inter Milan |
| 2026-05-29 | €2M | Inter Milan |
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
- −0.461
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 20% of the 507 Serie A players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
Valued above 59% of the 485 goalkeepers.
See them in the Explorer →Where Sommer 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
- HummelsCBAS Roma · Serie A€2M
- SkorupskiGKBologna FC 1909 · Serie A€2M
- PerinGKJuventus FC · Serie A€2M
- AcerbiCBInter Milan · Serie A€2M
- RönnowGK1.FC Union Berlin · goalkeepers€2M
- JohnstoneGKWolverhampton Wanderers · goalkeepers€2M
- DimitrievskiGKValencia CF · goalkeepers€2M
- KocukGKSamsunspor · goalkeepers€2M
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).