John Fashanu presents the investigative sports series. Where does good, hard competition end and downright violence begin? An increasing number of players are taking legal action against opponents. Is sport going soft, or are the officials allowing the thugs to get away with too much on the field of play? Plus, pigeon racing is one of Britain's oldest and most popular sports but its future is threatened by an endangered species. Too many racing birds are being killed in flight by the predatory peregrine falcon. Editor David Taylor