Mongahan have have pulled off the great escape and survived the drop from Division 1 of the Allianz Football League at the expense of Armagh.
The Farney men edged out Mayo in Castlebar by 2-14 to 0-14.
Meanwhile, it was a cagey affair up in Omagh but Tyrone came out on top against rivals Armagh by 18 points to 16.
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Armagh will join Donegal in Division 2 next year after a 0-21 to 9 points loss to Roscommon.
Stephen Cluxton watched from the bench as Dublin footballers secured promotion to the top tier after seeing off Louth by 1-16 to 1-06 at Croke Park.
Captain Sean Kelly was man of the match for Galway as they hung on to see-off Kerry by 1-13 to 0-14 points at Pearse Stadium.
