The Laws of the Game state that, for a kick-off:
a goal may be scored directly against the opponents from the kick-off; if the ball directly enters the kicker’s goal, a corner kick is awarded to the opponents
I don't understand how this is possible :/
In every football match that I've seen, the kicker's kick goes straight into the opponent's half of the football field, as he stands facing his opponents. How then can the ball directly enter the kicker's own goal instead? The ball can't surely swing a 180deg U-turn mid-air to begin with...