Britain's Andy Murray has kicked off the ATP World Tennis Tour finals with a 6-3 3-6 6-2 over Argentine Juan Martin Del Potro at the O2 Arena in London.
Murray dominated the first set before De Potro came back with gusto in to claim the second.
It looked as if the Argentine had the momentum heading into the decisive set but Murray broke early before comfortably claiming the win.
The scot has struggled to find form since September's US Open but says he's feeling confident in London.
