In its 12th season (1974–75), Second League was played with 32 teams, 16 in red group and 16 in white group. Group winners promoted to First League1975–76 and last teams relegated to Third League1975–76 in each group. Mersin İY became 3rd with 14 wins in Red Group.
1974–75Turkish Cup was played for the 13th season as Türkiye Kupası by 22 teams. Two elimination rounds and finals were played in two-legs elimination system. Top ten first division teams from previous season participated. Mersin İdmanyurdu did not participate in 1974–75Turkish Cup because they had finished previous season at 15th place. Beşiktaş won the Cup for the first time and became eligible for 1975–76ECW Cup.[7]
Management
Club management
Kaya Mutlu was club president.
Coaching team
1974–75 Mersin İdmanyurdu head coaches:
Nat
Head Coach
Period
Pl
W
D
L
Notes
01.08.1974 – 31.05.1975
Note: Only official games were included.
1974–75 squad
Stats are counted for 1974–75Second League matches.[8][9] In the team rosters five substitutes were allowed to appear, two of whom were substitutable. Only the players who appeared in game rosters were included and listed in the order of appearance.
^Standings, promotion and relegations from Cem Pekin Archives, retrieved on 26 August 2009. Standings and results from maçkolik.com league page, retrieved on 26 February 2015. Standings by rounds obtained from a search performed in Milliyet online archive performed on 12 August 2010.
^Stats were not provided by TFF for this season. See TFF Club page. Search for 1974–75 squad and 1974–75 matches are not provided. Retrieved on 7 August 2015.
^ abData were obtained from; Erbil, Cihat (1975). Story of the 50 YearsRetrieved on 29 July 2011 from 50 Yılın Öyküsü, p. 57. And an advanced search performed in Milliyet online archive for 1974–75 Mersin İdmanyurdu season. The maçkolik.com page was blank for the squad of this season, because game reports are blank. The rsquad below is obtained from the game reports of four games retrieved from Milliyet. Retrieved on 27 August 2015.
^İsmail Akdağcık. Player signed on Summer 1974. He grew up in Tarsus İdmanyurdu youth team. He continued in the next season. Details from. maçkolik.com page.
^Kemal Yalçınkaya. B. Kemal. Player signed on Summer 1974. His previous team was İskenderunspor. He continued in the next season. Details from maçkolik.com page.
^Kemal Damkal. Kemal II. Player signed on Summer 1974. His previous team was Ankara Güneşspor. He continued in the next season. Details from maçkolik.com page.
^Fikret Özdil. In the team since Winter 1966. Details from maçkolik.com page.
^Mehmet Levent Arıkdoğan. In the team since Summer 1972. He grew up in MİY youth team. He continued in the next season. Details from maçkolik.com page.