| 12. Round | 01/12/1979 | TSG Bau Rostock | - | ISG Schwerin | 3:2 |  |
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| 13. Round | 08/12/1979 | TSG Bau Rostock | - | SG Dynamo Schwerin | 4:1 | ||||
| 14. Round | 15/12/1979 | BSG Post Neubrandenburg | - | TSG Bau Rostock | 2:1 | |
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| 10. Round | 22/02/1980 | Hansa Rostock | - | TSG Bau Rostock | 2:0 | ||||
| 15. Round | 01/03/1980 | TSG Bau Rostock | - | BSG KKW Greifswald | 4:1 | ||||
| 16. Round | 08/03/1980 | TSG Wismar | - | TSG Bau Rostock | 1:2 | ||||
| 17. Round | 15/03/1980 | TSG Bau Rostock | - | ASG Vorwärts Stralsund | 2:2 | ||||
| 18. Round | 23/03/1980 | BSG Schiffahrt/Hafen Rostock | - | TSG Bau Rostock | 2:2 | ||||
| 19. Round | 30/03/1980 | TSG Bau Rostock | - | BSG Nord Torgelow | 5:1 | |
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| 20. Round | 06/04/1980 | BSG Motor Warnowwerft Warnemünde | - | TSG Bau Rostock | 1:6 | |
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| 21. Round | 11/04/1980 | TSG Bau Rostock | - | Hansa Rostock | 0:5 | ||||
| 22. Round | 19/04/1980 | Hydraulik Parchim | - | TSG Bau Rostock | 0:5 |
Germany