With one game remaining, the permutations can be very simple or very complex for Tyrone and Armagh.
If either side wins in Omagh on Sunday, they’ll be safe from relegation. However, the losers could face relegation depending on how other results go.
Monaghan, Roscommon and All-Ireland champions Kerry are also in the relegation mire, but Paddy Carr's Donegal will need a facile win over Roscommon and other results to go in their favour.