Rudiger gave Chelsea the lead with his first Premier League strike
It had been coming for Chelsea who had not managed to break down Swansea in the first half, but after 55 minutes Antonio Rudiger found the back of the net with a smart header.
Chelsea had a stroke of luck to finally get the better of the Swansea defence when Kante's ball took a nick off the head of Bony.
It seemed to be drifting wide before Rudiger came in steaming to the back post to nod into the net.