Graham Dilley

Graham Dilley was a cricketer, notable for playing for England in The Ashes in 1981. He inadvertently created a divergent, apocalyptic timeline due to his fielding in the third test. In the original, proper timeline, he made a spectacular catch, which secured England's victory over Australia. The new timeline, however, was created when he dropped the catch, consequent to a late distraction. This error incited a riot which led to greater social disorder, an assassination attempt on Elizabeth II, and, ultimately, a whole wave of political deaths, anarchy, and war across the globe.

When the Fifth Doctor, Peri, and Erimem went to Leeds to see what had happened, they discovered that the Doctor, Tegan, and Turlough were already there, and that Dilley's last-minute distraction was Tegan herself. The younger Doctor hopped back in time slightly to replay the events of the match. He, of course, couldn't directly intervene in the flow of events because he might have met himself and triggered the Blinovitch Limitation Effect, so he gave Peri and Erimem the task of stopping Tegan from affecting Dilley's play. At a moment when Tegan was separated from Turlough, they attempted small talk with Tegan, much to the dismay of an annoyed spectator. Soon Tegan was in a heated argument with the spectator, and Dilley noticed the brewing row. Tegan snapped at Dilley to keep his eyes in the game, which was enough to ensure that Dilley would catch the ball, give England victory, and restore the timeline. (ST: Graham Dilley Saves the World)