The ball shall be bowled from each wicket alternately in overs of 6 balls.

An over has started when the bowler starts his run up or, if he has no run up, his

delivery action for the first delivery of that over.

When 6 balls have been bowled other than those which are not to count in the over

and as the ball becomes dead - see Law 23 (Dead ball) - the umpire shall call Over

before leaving the wicket.

(a) A ball shall not count as one of the 6 balls of the over unless it is delivered,

even though a batsman may be dismissed or some other incident occurs before the

ball is delivered.

(b) A ball which is delivered by the bowler shall not count as one of the 6 balls of

the over

    (i) if it is called dead, or is to be considered dead, before the striker has

        had an opportunity to play it. See Law 23 (Dead ball).

    (ii) if it is a No ball. See Law 24 (No ball).

    (iii) if it is a Wide. See Law 25 (Wide ball).

    (iv) if it is called dead in the circumstances of either of Laws 23.3 (vi)

         (Umpire calling and signalling Dead ball) or 42.4 (Deliberate attempt

         to distract striker).

If an umpire miscounts the number of balls, the over as counted by the umpire

shall stand.

A bowler shall be allowed to change ends as often as desired, provided only that

he does not bowl two overs, or parts thereof, consecutively in the same innings.

(a) Other than at the end of an innings, a bowler shall finish an over in progress

unless he is incapacitated, or he is suspended under any of Laws 17.1 (Practice on

the field), 42.7 (Dangerous and unfair bowling – action by the umpire), 42.9

(Time wasting by the fielding side), or 42.12 (Bowler running on the protected

area after delivering the ball).

(b) If for any reason, other than the end of an innings, an over is left uncompleted

at the start of an interval or interruption of play, it shall be completed on

resumption of play.

If for any reason a bowler is incapacitated while running up to bowl the first ball

of an over, or is incapacitated or suspended during an over, the umpire shall call

and signal Dead ball. Another bowler shall complete the over from the same end,

provided that he does not bowl two overs, or parts thereof, consecutively in one

innings.