Runners-up of two groups played a play-off game and winner promoted to first league as well.

Results of games MİY played in 1978–79 Second League Red Group by rounds: 1978–79 Turkish Cup was played for the 17th season as Türkiye Kupası by 122 teams.

[10] The drawings and results Mersin İdmanyurdu (MİY) followed in 1978–79 Turkish Cup are shown in the following table.

Mersin İdmanyurdu (MİY) 1978–79 Turkish Cup game reports is shown in the following table.

MİY amateur team was also participated and eliminated to Tarsus İdmanyurdu:[11] Atilla Perşembe was club president.