Swansea City won for just the second time in 11 Championship matches as Joel Piroe, Liam Cullen and Ollie Cooper struck in a 3-1 win over 10-man Sunderland.
But Cullen's close-range finish and Cooper's drive secured Swansea's first away win since early October.
Sunderland were left counting the cost of Luke O'Nien's 18th-minute red card, for a heavy challenge on Cooper.
The Black Cats drop to 10th in the table having lost for the first time in five league games, with Swansea a place below Tony Mowbray's team on goal difference.
Sunderland have been formidable opponents in recent times, having won five of their nine Championship games before this one and progressed in the FA Cup.