Lanes were introduced to the athletic track at the 1908 London games to ensure that each of the 400 m competitors had enough room. During this event, the three American finalists obstructed the British competitor. The judges at the time, who were all British, decided on a re-run the following day. This time, ropes separated each athlete. This device proved to be a waste of time, because the three Americans refused to run a second final, and the Englishman Haswelle ran the 400 m alone. Thus it was decided that lanes would be added to the track, to separate the runners. The ropes initially used have now been replaced by white lines incorporated on the ground.