Sunderland left it late at the Kassam Stadium to record yet another vital three points, as they continued their hopes of a play-off position this season.
The Black Cats had taken an early lead through Corry Evans before Elliott Moore drew the game level for the hosts just before half-time. But in typical Rokerites spirit, Elliot Embleton fired home the winner from the bench to lifted Alex Neil's side back into the top six.
With Oxford boss Karl Robinson admitting Sunderland's late decider was a bitter pill to swallow, the U's are now 4 points outside of the play-off places following yesterday's results.