Michael Gault says Glentoran owe their fans a "massive performance" at Windsor Park or it will be "lights out" on their title dream.
The Glens trail Linfield by six points with just four games remaining this season, starting with a Friday's massive Big Two showdown in South Belfast.
Mick McDermott's side are still smarting from last Saturday's 4-0 drubbing by Crusaders, a result that has left their hopes of a first Gibson Cup since 2009 hanging by a thread.
