30.1 When out of his/her ground
30.1.1 A batsman shall be considered to be out of his/her ground unless some part of his/her person or bat is grounded behind the popping crease at that end.
30.1.2 However, a batsman shall not be considered to be out of his/her ground if, in running or diving towards his/her ground and beyond, and having grounded some part of his/her person or bat beyond the popping crease, there is subsequent loss of contact
between the ground and any part of his/her person or bat,
or between the bat and person,
provided that the batsman has continued movement in the same direction.
30.2 Which is a batsman’s ground
30.2.1 If only one batsman is within a ground, it is his/her ground and will remain so even if he/she is later joined there by the other batsman.
30.2.2 If both batsmen are in the same ground and one of them subsequently leaves it, the ground belongs to the batsman who remains in it.
30.2.3 If there is no batsman in either ground, then each ground belongs to whichever batsman is nearer to it, or, if the batsmen are level, to whichever batsman was nearer to it immediately prior to their drawing level.
30.2.4 If a ground belongs to one batsman then, unless there is a striker who has a runner, the other ground belongs to the other batsman, irrespective of his/her position.
30.2.5 When a batsman who has a runner is striker, his/her ground is always at the wicket-keeper’s end. However, 30.2.1, 30.2.2, 30.2.3 and 30.2.4 will still apply, but only to the runner and the non-striker, so that that ground will also belong to either the non-striker or the runner, as the case may be.
30.3 Position of non-striker
The non-striker, when standing at the bowler’s end, should be positioned on the opposite side of the wicket to that from which the ball is being delivered, unless a request to do otherwise is granted by the umpire.
© Marylebone Cricket Club 2017