Derry copperfastened their position at the top Division 2B with a whopping 23 point win (2-31 to 0-14) over Roscommon at Owenbeg.
While the Connacht side started brightly, first half goals from Christy McNaughton and Darragh McGilligan helped the hosts into a nine point lead at the break.
With the aid of the elements in the second half, Derry hammered home their superiority, outscoring their opponents 0-18 to 0-04 after the restart.
Donegal remain on course to join their neighbours in the league decider after a 2-26 to 1-16 win over London in Letterkenny.
Leading 14-8 at the break, Oisin Grant's goal shortly after half-time quelled any hint of a London comeback.
While the Exiles hit the net with 10 minutes remaining, Liam McKinney's 64th minute strike made double sure of the result, the Ulster side running out 13 point winners.
Tyrone had nine points to spare at home to bottom placed Wicklow in Dungannon, winning on a 1-29 to 2-17 scoreline.
Leading 15-9 at half-time, Lorcan Devlin's 46th minute goal pushed the margin out to double digits.
Goals from Cian Lohan and Seanie Germaine dragged the visitors back into the contest, reducing the margin to four with seven minutes remaining before a closing burst from Tyrone made the result safe.
