In normal circumstances, a Substitute shall be allowed to field only
for a player who satisfies the Umpires
that he has become injured or become ill during the match. However, in
very exceptional circumstances, the Umpires may use their discretion to allow a
Substitute for a player who has to leave the field for other wholly
acceptable reasons, subject to consent being given by the opposing
Captain. If a player wishes to change his shirt, boots, etc., he may
leave the field to do so (no changing on the field) but no Substitute
will be allowed.
An injured Batsman may be out should his Runner break any one of
Laws 33. (Handled the Ball),
37. (Obstructing the Field) or
38. (Run Out). As Striker he remains
himself subject to the Laws. Furthermore, should he be out of his
ground for any purpose and the wicket at the Wicket-Keeper's end be put down
he shall be out under Law 38. (Run Out) or
Law 39. (Stumped) irrespective of the
position of the other Batsman or the Runner and no runs shall be
scored.
When not the Striker, the injured Batsman is out of the game and
shall stand where he does not interfere with the play. Should he
bring himself into the game in any way then he shall suffer the
penalties that any transgression of the Laws demands.
