Stefan Posch
Stefan Posch, 29, from Austria ➤ 1.FSV Mainz 05, since 2026 ➤ Centre-Back ➤ Market value: €6.00m ➤ * 14/05/1997 in Judenburg, Austria

Info
Biographical card, current club and contract facts. Empty fields mean the source did not publish that value.
- Club
- Mainz
- League
- Bundesliga
- Position
- Defender - Centre-Back
- Shirt
- #4
- Age
- 29
- Date of birth
- 14/05/1997
- Height
- 1,88m
- Foot
- right
- Citizenship
- Austria
- Joined
- 12/08/2026
- Contract until
- -
- Market value
- €6.00m
- Career fees
- €17.15m
- Youth clubs
- TuS Kraubath (2004-09)
Statistics
Career totals from Transfermarkt: this season, then by competition and by club. Minutes and cards appear when the source recorded them.
This season
| Season | Competition | Apps | Min | G | A | YC | RC |
|---|---|---|---|---|---|---|---|
| 26/27 | Bundesliga | 0 | 0 | 0 | 0 | 0 | 0 |
By competition
| Competition | Apps | G | A |
|---|---|---|---|
| Bundesliga | 126 | 2 | 1 |
| Serie A | 94 | 8 | 4 |
| Regionalliga Südwest | 38 | 3 | 0 |
| Regional League East | 28 | 4 | 1 |
| U19-Bundesliga S/SW | 21 | 2 | 1 |
| UEFA Champions League | 10 | 0 | 0 |
| ÖFB Jugendliga U18 | 10 | 3 | 0 |
| DFB-Pokal | 8 | 0 | 0 |
| Europa League | 7 | 0 | 0 |
| Italy Cup | 6 | 0 | 0 |
| Conference League | 4 | 2 | 0 |
| ÖFB Jugendliga U16 | 4 | 0 | 0 |
| U19-Championship | 1 | 0 | 0 |
| Champions League Qu. | 0 | 0 | 0 |
| Bundesliga | 0 | 0 | 0 |
| ÖFB-Cup | 0 | 0 | 0 |
By club
| Club | Apps | G | A |
|---|---|---|---|
| Hoffenheim | 126 | 2 | 1 |
| Bologna | 85 | 7 | 4 |
| Hoffenheim II | 38 | 3 | 0 |
| FC Admira II | 28 | 4 | 1 |
| Hoffenheim U19 | 22 | 2 | 1 |
| Mainz | 20 | 2 | 0 |
| Como | 15 | 1 | 0 |
| AKA Admira U18 | 10 | 3 | 0 |
| Atalanta | 8 | 0 | 0 |
| AKA Admira U16 | 4 | 0 | 0 |
Transfers
Recorded moves between clubs, with fee and market value on the day of the deal when the source has them.
| Date | Season | From | To | Fee | Market value |
|---|---|---|---|---|---|
| 12/08/2026 | 26/27 | Como | Mainz | €4.00m | €6.00m |
| 30/06/2026 | 25/26 | Mainz | Como | End of loan | €6.00m |
| 22/01/2026 | 25/26 | Como | Mainz | Loan fee:<br /><i class="normaler-text">€200k</i> | €5.50m |
| 21/01/2026 | 25/26 | Bologna | Como | €5.90m | €5.50m |
| 20/01/2026 | 25/26 | Como | Bologna | End of loan | €5.50m |
| 01/09/2025 | 25/26 | Bologna | Como | Loan fee:<br /><i class="normaler-text">€500k</i> | €8.00m |
| 30/06/2025 | 24/25 | Atalanta | Bologna | End of loan | €8.00m |
| 03/02/2025 | 24/25 | Bologna | Atalanta | Loan fee:<br /><i class="normaler-text">€1.00m</i> | €10.00m |
| 01/07/2023 | 23/24 | Hoffenheim | Bologna | €5.00m | €14.00m |
| 30/06/2023 | 22/23 | Bologna | Hoffenheim | End of loan | €14.00m |
| 01/09/2022 | 22/23 | Hoffenheim | Bologna | Loan fee:<br /><i class="normaler-text">€350k</i> | €10.00m |
| 01/07/2017 | 17/18 | Hoffenheim II | Hoffenheim | - | €100k |
| 01/07/2016 | 16/17 | Hoffenheim U19 | Hoffenheim II | - | - |
| 06/08/2015 | 15/16 | Admira Wacker | Hoffenheim U19 | €200k | - |
| 01/07/2014 | 14/15 | FC Admira II | Admira Wacker | - | - |
| 01/01/2014 | 13/14 | AKA Admira U18 | FC Admira II | - | - |
| 01/07/2013 | 13/14 | AKA Admira U16 | AKA Admira U18 | - | - |
| 01/07/2012 | 12/13 | AKA Admira U15 | AKA Admira U16 | - | - |
| 01/07/2011 | 11/12 | Admira Youth | AKA Admira U15 | - | - |
| 15/03/2011 | 10/11 | Sturm Graz Yth | Admira Youth | ? | - |
| 01/07/2010 | 10/11 | GAK Youth | Sturm Graz Yth | ? | - |
| 01/07/2009 | 09/10 | Leoben Youth | GAK Youth | ? | - |
| 01/07/2008 | 08/09 | Kraubath Jgd. | Leoben Youth | ? | - |
National
Senior and youth national-team spells: caps, goals, shirt number and whether the player is still in the current pool.
| Team | Caps | Goals | Shirt | Debut | Status |
|---|---|---|---|---|---|
| Austria | 56 | 5 | 5 | 2019-06-10 | Current international |
| Austria U21 | 10 | 1 | 4 | 2017-03-24 | Former international |
| Austria U19 | 11 | 2 | 6 | 2015-10-07 | Former international |
| Austria U17 | 13 | 4 | 3 | 2013-08-21 | Former international |
| Austria U18 | 6 | 1 | 3 | 2014-09-16 | Former international |
| Austria U16 | 13 | 2 | 0 | 2012-06-12 | Former international |
Market value
Current and peak Transfermarkt valuations, plus the history of changes by club and age. Rankings are relative to the current squad, league and position group.
- Current
- €6.00m
- Highest
- €14.00m · 17/12/2019
- Last change
- 27/05/2026
| Date | Age | Club | Value |
|---|---|---|---|
| 03/07/2014 | 17 | FC Admira Wacker Mödling | €125k |
| 11/01/2015 | 17 | FC Admira Wacker Mödling | €125k |
| 17/06/2015 | 18 | FC Admira Wacker Mödling | €100k |
| 08/07/2015 | 18 | FC Admira Wacker Mödling | - |
| 09/08/2016 | 19 | TSG 1899 Hoffenheim II | €75k |
| 06/02/2017 | 19 | TSG 1899 Hoffenheim II | €100k |
| 18/10/2017 | 20 | TSG 1899 Hoffenheim | €300k |
| 28/12/2017 | 20 | TSG 1899 Hoffenheim | €2.50m |
| 05/06/2018 | 21 | TSG 1899 Hoffenheim | €2.50m |
| 18/12/2018 | 21 | TSG 1899 Hoffenheim | €2.50m |
| 06/03/2019 | 21 | TSG 1899 Hoffenheim | €5.50m |
| 05/06/2019 | 22 | TSG 1899 Hoffenheim | €5.50m |
| 02/10/2019 | 22 | TSG 1899 Hoffenheim | €9.00m |
| 17/12/2019 | 22 | TSG 1899 Hoffenheim | €14.00m |
| 08/04/2020 | 22 | TSG 1899 Hoffenheim | €11.00m |
| 26/11/2020 | 23 | TSG 1899 Hoffenheim | €13.00m |
| 10/02/2021 | 23 | TSG 1899 Hoffenheim | €13.00m |
| 27/05/2021 | 24 | TSG 1899 Hoffenheim | €13.00m |
| 07/10/2021 | 24 | TSG 1899 Hoffenheim | €11.00m |
| 22/12/2021 | 24 | TSG 1899 Hoffenheim | €11.00m |
| 09/06/2022 | 25 | TSG 1899 Hoffenheim | €10.00m |
| 27/09/2022 | 25 | Bologna FC 1909 | €7.00m |
| 11/11/2022 | 25 | Bologna FC 1909 | €7.00m |
| 21/03/2023 | 25 | Bologna FC 1909 | €10.00m |
| 15/06/2023 | 26 | Bologna FC 1909 | €14.00m |
| 20/12/2023 | 26 | Bologna FC 1909 | €14.00m |
| 05/06/2024 | 27 | Bologna FC 1909 | €14.00m |
| 18/12/2024 | 27 | Bologna FC 1909 | €10.00m |
| 17/06/2025 | 28 | Atalanta BC | €8.00m |
| 07/10/2025 | 28 | Como 1907 | €7.00m |
| 23/12/2025 | 28 | Como 1907 | €5.50m |
| 27/05/2026 | 29 | 1.FSV Mainz 05 | €6.00m |
xG Statistics
Stefan Posch's xG Statistics block is an Understat shot model for the 2026 season. It does not replace goals and assists — it explains them. xG and xA ask whether the chances were good enough; xGChain and xGBuildup show how often the player was on the ball in moves that became shots. Use minutes as the denominator: a large xG in 80 minutes is a hot streak, the same xG over 1,200 minutes is a role. Figures are rounded to two decimals and stay empty when Understat has no match for this player.
| Season | League | Club | Apps | Min | G | xG | npxG | A | xA | Sh | KP | xGChain |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | Bundesliga | Mainz 05 | 1 | 89 | 0 | 0.01 | 0.01 | 0 | 0.1 | 1 | 1 | 1.18 |
| 2025 | Bundesliga | Mainz 05 | 16 | 1399 | 0 | 0.4 | 0.4 | 0 | 0.49 | 10 | 8 | 4.9 |
What the columns mean
Read this table as chance quality, not as a scoreboard. A player can outscore xG (finishing well) or lag behind it (missed sitters). Compare rows only when minutes are in the same range.
Apps· Appearances- Matches in which the player was used in this league season, including substitute minutes.
Min· Minutes- Total minutes on the pitch. Useful when comparing output: 1 goal in 90 minutes is not the same as 1 goal in 800.
G· Goals- Goals credited to the player in the Understat shot model for that season.
xG· Expected goals- The quality of shots the player took, expressed as the number of goals an average finisher would score from the same chances. A 0.30 xG shot is a chance that goes in about 3 times in 10.
npxG· Non-penalty xG- Expected goals with penalties removed. This is the cleaner read of open-play and set-piece finishing, because a penalty is usually ~0.76 xG by itself.
A· Assists- Goals that followed the player's last pass. Actual assists, not the model.
xA· Expected assists- The xG value of shots that came directly from the player's key passes. High xA with few assists usually means teammates missed good chances.
Sh· Shots- Total shots recorded by Understat, including blocked and off-target attempts.
KP· Key passes- Passes that led to a shot. This is the volume behind xA.
xGChain· xG chain- Team xG from possessions the player touched. It captures involvement in build-up, not only the shot or the last pass. A midfielder who starts attacks can rank high here without scoring.
xGBuildup· xG buildup- The same possession xG, but excluding the shot-taker and the assist. This is the purest 'how much did this player help create the chance before the final ball' number.
NPG· Non-penalty goals- Goals scored from open play or set pieces, excluding penalties.







