Law 36 LEG BEFORE WICKET (L.B.W.)
1. The striker is only liable to be dismissed under this Law if the delivery is a fair ball.
2. An appeal must be made before the umpire can give the striker out.
3.
The factors which must be considered are :-
(a) Did the ball pitch in a straight line between wicket and wicket, or did it
pitch outside the line of off stump ?
(b) Was the first interception made by some part of the strikers person, dress
or equipment and not the bat or the hand holding the bat ?
(c) Was the first interception
(i) in line between wicket and wicket, even if above the height of the bails,
whether or not the striker made a genuine attempt to play the ball with the bat
? OR
(ii) if outside the line of the off stump and the striker did not make a genuine
attempt to play the ball with the bat ?
(d) Would the ball definitely have hit the wicket ?
A positive response to all factors will result in the appeal being upheld.
If there is a negative reply to any of the questions, the appeal must be
answered "Not out".
4. The umpire is required to ignore what might have happened if the ball had pitched after being intercepted full pitch. It is to be assumed that the path of the ball before interception would have continued after the interception.
5. The offside of the strikers wicket is determined by his stance at the moment the ball comes into play.