No problem. The picture demolidor showed you is from semifinals day. Can only fit 2 courts on that day as they set up more VIP seats on the floor. The world championships was actually meant to be played in a much bigger arena. The place where the ATP Paribas Paris Master in tennis is being played. I think it can hold 6 or 7000 spectators. But for some reason they changed it to Stade Pierre de Coubertin (the one in the picture). Cant seem to remember the reason for changing.