Claim: The 1986–87 League of Ireland First Division, the second season of  the SSE Airtricity League First Division, was participated by ten teams who all played 18 games each.
Evidence: The 1986–87 League of Ireland First Division season was the second season of the League of Ireland First Division. The League of Ireland First Division (Irish: Céad Roinn Sraith na hÉireann), also known as the SSE Airtricity League First Division, is the second level division in both the League of Ireland and the Republic of Ireland football league system. The First Division was contested by 10 teams and Derry City F.C. won the division. 18 18 18 18 18 18 18 18 18 18 Team