Sunderland extended their unbeaten run to eight Sky Bet League One games as they were held to a 0-0 draw by Doncaster Rovers at the Stadium of Light on Friday night.
Joel Lynch found the side-netting in a first half devoid of openings, while Jon Taylor powered a header the wrong side of the post shortly after the restart.
The Black Cats tightened their grip on the game as the second period wore on, but in spite of Rovers boasting the divisional record for most goals scored after the 80-minute mark, the game petered out with neither goalkeeper beaten.
As the resurgence of Phil Parkinson's side continues, they move above Oxford into fifth, while Doncaster stay 10th, three points adrift of the play-off places.