This is the other, smaller, practice court.
ATP World Tour Finals trophy
Here is the trophy to be won by the winner - it was on display, available to take a picture with it in the fanzone.
Over the entrance of the O2 arena there was a photo with all the players who qualified.
Art balling is basically hitting a ball with paint on to paper to make a shape. It is how the top 8 players made their paintings going on auction. Here is a normal example of art balling and was made at the place where fans could make their own art balling picture.
Here are the eight pictures of the top 8 players, with their racquets, photographed at the O2 arena by me.