This page lists the head-to-head record of FSV Mainz vs 1.FC Union Berlin including biggest victories and defeats between the two sides, and H2H stats in all competitions.
Overall H2H Record - Summary
| Total | 1.FC Union Berlin | FSV Mainz | Draws |
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| Total Matches | 18 | 8 | 5 | 5 |
| At Stadion An der Alten Forsterei | 9 | 2 | 4 | 3 |
| At Opel Arena | 9 | 6 | 1 | 2 |
| Bundesliga 2 Matches | 6 | 1 | 4 | 1 |
| Bundesliga Matches | 12 | 7 | 1 | 4 |
| Total Goals Scored | 47 | 28 | 19 | |
Last 50 1.FC Union Berlin vs FSV Mainz Matches
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| 2025 19 January | | Bundesliga | Union Berlin | 2 - 1 | Mainz 05 |
| 2024 24 August | | Bundesliga | Mainz 05 | 1 - 1 | Union Berlin |
| 2024 7 February | | Bundesliga | Mainz 05 | 1 - 1 | Union Berlin |
| 2023 20 August | | Bundesliga | Union Berlin | 4 - 1 | Mainz 05 |
| 2023 4 February | | Bundesliga | Union Berlin | 2 - 1 | Mainz 05 |
| 2022 14 August | | Bundesliga | Mainz 05 | 0 - 0 | Union Berlin |
| 2022 26 February | | Bundesliga | Union Berlin | 3 - 1 | Mainz 05 |
| 2021 3 October | | Bundesliga | Mainz 05 | 1 - 2 | Union Berlin |
| 2021 6 February | | Bundesliga | Mainz 05 | 1 - 0 | Union Berlin |
| 2020 2 October | | Bundesliga | Union Berlin | 4 - 0 | Mainz 05 |
| 2020 27 May | | Bundesliga | Union Berlin | 1 - 1 | Mainz 05 |
| 2019 9 November | | Bundesliga | Mainz 05 | 2 - 3 | Union Berlin |
| 2004 31 January | | Bundesliga 2 | Union Berlin | 1 - 1 | Mainz 05 |
| 2003 2 August | | Bundesliga 2 | Mainz 05 | 2 - 1 | Union Berlin |
| 2003 25 January | | Bundesliga 2 | Mainz 05 | 1 - 0 | Union Berlin |
| 2002 9 August | | Bundesliga 2 | Union Berlin | 0 - 2 | Mainz 05 |
| 2002 4 May | | Bundesliga 2 | Union Berlin | 3 - 1 | Mainz 05 |
| 2001 15 December | | Bundesliga 2 | Mainz 05 | 1 - 0 | Union Berlin |
Biggest 1.FC Union Berlin Victory vs FSV Mainz
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| 2020 2 October | | Bundesliga | Union Berlin | 4 - 0 | Mainz 05 |
Biggest FSV Mainz Victory vs 1.FC Union Berlin
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| 2002 9 August | | Bundesliga 2 | Union Berlin | 0 - 2 | Mainz 05 |
Biggest 1.FC Union Berlin Defeat vs FSV Mainz
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| 2002 9 August | | Bundesliga 2 | Union Berlin | 0 - 2 | Mainz 05 |
Biggest FSV Mainz Defeat vs 1.FC Union Berlin
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| 2020 2 October | | Bundesliga | Union Berlin | 4 - 0 | Mainz 05 |
Last 5 1.FC Union Berlin Home Matches
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| 2025 17 October | | Bundesliga | Union Berlin | 3 - 1 | Borussia M'gladbach |
| 2025 28 September | | Bundesliga | Union Berlin | 0 - 0 | Hamburger SV |
| 2025 13 September | | Bundesliga | Union Berlin | 2 - 4 | Hoffenheim |
| 2025 23 August | | Bundesliga | Union Berlin | 2 - 1 | Stuttgart |
| 2025 10 May | | Bundesliga | Union Berlin | 0 - 3 | Heidenheim |
Last 5 FSV Mainz Home Matches
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| 2025 23 October | | Europa Conference League | Mainz 05 | 1 - 0 | Zrinjski |
| 2025 18 October | | Bundesliga | Mainz 05 | 3 - 4 | Bayer Leverkusen |
| 2025 27 September | | Bundesliga | Mainz 05 | 0 - 2 | Borussia Dortmund |
| 2025 13 September | | Bundesliga | Mainz 05 | 0 - 1 | RB Leipzig |
| 2025 28 August | | Europa Conference League | Mainz 05 | 4 - 1 | Rosenborg |
Last 5 1.FC Union Berlin Away Matches
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| 2025 24 October | | Bundesliga | Werder Bremen | 1 - 0 | Union Berlin |
| 2025 4 October | | Bundesliga | Bayer Leverkusen | 2 - 0 | Union Berlin |
| 2025 21 September | | Bundesliga | Eintracht Frankfurt | 3 - 4 | Union Berlin |
| 2025 21 September | | Bundesliga | Eintracht Frankfurt | 3 - 4 | Union Berlin |
| 2025 31 August | | Bundesliga | Borussia Dortmund | 3 - 0 | Union Berlin |
Last 5 FSV Mainz Away Matches
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| 2025 26 October | | Bundesliga | Stuttgart | 2 - 1 | Mainz 05 |
| 2025 5 October | | Bundesliga | Hamburger SV | 4 - 0 | Mainz 05 |
| 2025 2 October | | Europa Conference League | Omonia Nicosia | 0 - 1 | Mainz 05 |
| 2025 20 September | | Bundesliga | Augsburg | 1 - 4 | Mainz 05 |
| 2025 31 August | | Bundesliga | Wolfsburg | 1 - 1 | Mainz 05 |