17 THE OVER
17.1 Number of balls
The ball shall be bowled from each end alternately in overs of 6 balls.
17.2 Start of an over
An over has started when the bowler starts his run-up or, if there is no run-up, startshis action for the first delivery of that over.
17.3 Validity of balls
17.3.1 A ball shall not count as one of the 6 balls of the over unless it is delivered, eventhough, as in clause41.16 (Non-striker leaving his ground early) a batsman may bedismissed or some other incident occurs without the ball having been delivered.
17.3.2 A ball delivered by the bowler shall not count as one of the 6 balls of the over
184.108.40.206 if it is called dead, or is to be considered dead, before the striker has had anopportunity to play it. See clause20.6 (Dead ball; ball counting as one ofover).
220.127.116.11 if it is called dead in the circumstances of clause18.104.22.168. Note also thespecial provisions of clause22.214.171.124. (Umpire calling and signaling Dead ball).
126.96.36.199 if it is a No ball. See clause21 (No ball).
188.8.131.52 if it is a Wide. See clause22 (Wide ball).
184.108.40.206 when any of clauses 24.4 (Player returning without permission), 28.2 (Fieldingthe ball), 41.4 (Deliberate attempt to distract striker), or 41.5 (Deliberatedistraction, deception or obstruction of batsman) is applied.
17.3.3 Any deliveries other than those listed in clause 17.3.1 and 17.3.2 shall be known as validballs. Only valid balls shall count towards the 6 balls of the over.
17.4 Call of Over
When 6 valid balls have been bowled and when the ball becomes dead, the umpire shallcall Over before leaving the wicket. See also clause20.3 (Call of Over or Time).
17.5 Umpire miscounting
17.5.1 If the umpire miscounts the number of valid balls, the over as counted by the umpireshall stand.
17.5.2 If, having miscounted, the umpire allows an over to continue after 6 valid balls havebeen bowled, he/she may subsequently call Over when the ball becomes dead afterany delivery, even if that delivery is not a valid ball.
17.5.3 Whenever possible, the third umpire shall liaise with the scorers and if possible inform the on-field umpires if the over has been miscounted.
17.6 Bowler changing ends
A bowler shall be allowed to change ends as often as desired, provided he does notbowl two overs consecutively, nor bowl parts of each of two consecutive overs, in the sameinnings.
17.7 Finishing an over17.7.1 Other than at the end of an innings, a bowler shall finish an over in progress unlessincapacitated or suspended under these Playing Conditions.
17.7.2 If for any reason, other than the end of an innings, an over is left uncompleted at thestart of an interval or interruption, it shall be completed on resumption of play.
17.8 Bowler incapacitated or suspended during an over
If for any reason a bowler is incapacitated while running up to deliver the first ball of anover, or is incapacitated or suspended during an over, the umpire shall call and signal Deadball. Another bowler shall complete the over from the same end, provided that he doesnot bowl two overs consecutively, nor bowl parts of each of two consecutive overs, in thatinnings.