Goalball is played exclusively by vision impaired athletes. It was invented in 1946 to help rehabilitate veterans who had lost their sight during the Second World War.
The sport was included in the Paralympic sport programme for the first time at Toronto 1976.
The object of the game is to throw a ball past the opponents and into their net to score points. Players stay on their hands and knees to defend their net and score against their opponents.
Bells inside the ball help to orientate the players by indicating the direction of the oncoming ball.