Coventry broke their away duck in 2008 but still drew a blank as their clash with fellow Championship strugglers Southampton finished 0-0.
Two teams staring uncomfortably over their shoulders at the drop zone played out a nervous encounter in arctic conditions at St Mary's.
Stern John, against his old club, and Vincent Pericard wasted rare chances for Southampton - while Michael Mifsud and ex-Saint Leon Best barely got a sniff at the other end.
After a wretched first half, the game improved - with goalkeepers Kasper Schmeichel and Richard Wright making decent saves after the break.
Jason Euell passed up a good chance for Saints when he fired wide from Gregory Vignal's cross, while Pericard blazed over the bar.
Schmeichel saved well from Mario Licka, before Bradley Wright-Phillips had the ball in the net only to be flagged for offside.