Fair delivery

Any delivery that is not called a No ball or a Wide by an umpire is a fair one. There are some who argue that a Wide is not unfair, it is just a sign of incompetence. The calling of a No ball may have nothing to do with the bowler or the actual delivery itself; an umpire may have spotted some other cause - for example the wicket-keeper 'encroaching' or an infringement on the fielding limitation relating to the number of fielders permitted to stand behind the popping crease on the leg side at the instant the ball was delivered. In that case, although delivered fairly, the ball becomes a No ball and unfair.