Justices Keegan and Humphreys joined Lady Justice Denise McBride in the Court of Appeal which, in the late hours of Saturday, upheld an appeal by the Portadown Orangeman Alan Hynes to allow the march to go ahead.
The ruling permits the Orange Order to march on Garvaghy Road in a matter of hours.
Breandán Mac Cionnaith stood outside Belfast High Court on Saturday evening after the court issued a temporary injunction preventing Sunday's Drumcree parade from proceeding.
Jamie Bryson spoke to the media outside Belfast High Court on Saturday evening alongside Jonathan Buckley, Carla Lockhart and Diane Dodds after the court issued a temporary injunction preventing Sunday's Drumcree parade from proceeding.
The stand-off at Drumcree made headlines in the 1990s, with nationalist residents of the Garvaghy Road opposed to the parade passing through the area, leading to violent clashes for several summers and political tension necessitating a major security operation.
Under the legal framework around parades in Northern Ireland, if the court simply passed an injunction against the Parades Commission ruling in relation to Drumcree, it would allow the Portadown District to carry out the parade without the restrictions outlined by the commission because it was legally notified.
The decision has been overturned.