The Mayo U20 hurlers are through to the semi finals of the Richie McElligott Cup (All Ireland B), following victory over Armagh today.
In a tight affair for the most part, Padraic Mooney's goal 20 minutes into the second half extended the Mayo lead to six points.
Further scores from corner forward Sean McGhee sealed victory.
Mayo now await the winners of the other quarter finals, with Roscommon in action tomorrow against Tyrone, and Down facing Wicklow.
Derry face Donegal in the last of the quarter finals on Wednesday night.
Full time score from Glennon Brothers Pearse Park, Longford:
Mayo 1-16 (19) Armagh 2-6 (12)