England's third goal has remained controversial ever since the match. According to the Laws of the Game the definition of a goal is when "the whole of the ball passes over the goal line". English supporters cited the good position of the linesman and the statement of Roger Hunt, the nearest England player to the ball, who claimed it was a goal and that was why he wheeled away in celebration rather than attempting to tap the rebounding ball in. Modern studies using film analysis and computer simulation have shown that the whole ball never crossed the line – only 97% did. Both Duncan Gillies of the Visual Information Processing Group at Imperial College London and Ian Reid and Andrew Zisserman of the Department of Engineering Science at University of Oxford have stated that the ball would have needed to travel a further 2.5–6.0 cm to fully cross the line. Some Germans cited possible bias of the Soviet linesman, especially as the USSR had just been defeated in the semi-finals by West Germany.