| 3. Round | 18/08/2012 | 1. FSV Mainz 05 II | - | SC Pfullendorf | 2:4 | ||||
| 4. Round | 21/08/2012 | SC Freiburg II | - | 1. FSV Mainz 05 II | 1:1 | ||||
| 7. Round | 04/09/2012 | Eintracht Frankfurt II | - | 1. FSV Mainz 05 II | 0:1 | ||||
| 11. Round | 30/09/2012 | 1. FSV Mainz 05 II | - | Waldhof Mannheim | 0:1 | ||||
| 14. Round | 20/10/2012 | 1. FSV Mainz 05 II | - | Hessen Kassel | 4:4 | ||||
| 15. Round | 27/10/2012 | SV 07 Elversberg | - | 1. FSV Mainz 05 II | 2:5 | ||||
| 16. Round | 03/11/2012 | 1. FSV Mainz 05 II | - | Bayern Alzenau | 1:1 | ||||
| 18. Round | 17/11/2012 | 1. FSV Mainz 05 II | - | SG Sonnenhof Großaspach | 0:0 | ||||
| 17. Round | 28/11/2012 | 1. FC Kaiserslautern II | - | 1. FSV Mainz 05 II | 2:0 | ||||
| 20. Round | 02/12/2012 | 1. FSV Mainz 05 II | - | Eintracht Trier | 1:1 | ||||
| 29. Round | 01/04/2013 | SC 07 Idar-Oberstein | - | 1. FSV Mainz 05 II | 0:2 | ||||
| 22. Round | 09/04/2013 | SC Pfullendorf | - | 1. FSV Mainz 05 II | 1:2 |
Croatia
Germany