Swansea closed the gap on second-placed Cardiff to three points with a dominant victory at their south Wales rivals.
Marvin Emnes stuck the winner from 20 yards after holding off Gabor Gyepes and firing past Tom Heaton with the aid of a deflection off Mark Hudson.
Scott Sinclair had earlier hit the post for Swansea as the visitors ended Cardiff's five-match winning run.
Craig Bellamy missed a great chance when clean through and then again a free header in the dying stages.
Marvin Emnes stuck the winner from 20 yards after holding off Gabor Gyepes and firing past Tom Heaton with the aid of a deflection off Mark Hudson.
Scott Sinclair had earlier hit the post for Swansea as the visitors ended Cardiff's five-match winning run.
Craig Bellamy missed a great chance when clean through and then again a free header in the dying stages.
