Guest post by Callum Synnott

Back in the 1966 world cup final, Geoff Hurst cannoned a shot into the underside of the crossbar, to see it cannon down and bounce on the goal line. The goal was awarded, and England went on to win the world cup. It is debatable that the ball did not cross the line, and that it merely bounced on the line. For a goal to be awarded, the whole ball has to cross the line. This is not the only time in history that goals have or in fact haven’t been awarded, due to common disagreements on whether or not the ball crossed the line.

When Tottenham travelled to Old Trafford in 2005, Pedro mendes fired a more than speculative effort from the halfway line, past Roy Carroll who fumbled the ball over the line, only to see the goal not given. Tottenham hadn’t...