Substitutes are permitted in the game of cricket to replace an injured player. However, the substitution must be approved by the umpires. Substitutes can include any member of the crowd, as well as members of on-site media or team coaching staff. One example is the 1988 tour of India, during which a New Zealand journalist took the field in place of a New Zealand player.
Test cricket is allowed to use substitutes for concussions
A rule was recently adopted by the ICC that allows players to be substituted in for concussion. This rule was created in response to growing concerns about head injuries in cricket and other sports. Before the rule, players were not allowed to take time off for injury. While the rule was initially not enforced in the domestic game of cricket, Cricket Australia and New Zealand Cricket Board have made it legal to allow players to use concussion substitutions.
A player cannot be replaced if they sustain a concussion in a Test match. Since the 2019 season, players can make such requests through the International Cricket Council. A player's doctor will decide if the concussion substitute would be a suitable replacement. The replacement must also be similar to the original.
They can't bat
Substitute bowlers cannot play cricket. A substitute fielder is able to play in the role of a replacement bowler. However, substitute bowlers cannot bat or bowl. Substitute bowlers have to wait for their turn before taking over. A substitute fielder can't play the role as captain or wicket-keeper. Substitution of a fielder requires the approval of the umpires. A substitute fielder is known as the 'twelfth man' in cricket. The exception to this rule is when the player becomes injured.
It is not the same law that applies to substitutions in cricket as it is for other sports. A substitute is permitted to take the place of a player who has suffered an injury or illness in a cricket match. However, a substitute cannot bat or bowl during the injured player's innings. If the injured person is still healing from their injury, a substitute cannot bat or bowl.
They cannot bowl
As long as the umpires approve, substitutions can be made for anyone. This could be a crowd member, a reporter on-site, or a member if the coaching staff. In one famous instance, a New Zealand journalist took the field during the team's tour of India.
A substitute can only act in the place of an injury player. He cannot be a captain or bat. A substitute can't take the place of a player with a concussion. A player who has suffered a concussion will not be able to play baseball or bowl.
They can't be wicketkeepers.
The rules of cricket allow for substitutes to be called into play only when necessary. The team must nominate a substitute to act as the captain or wicketkeeper. In order to be called into action, they must also have the approval of the umpires. In some games, substitutes cannot be used as captains or wicketkeepers.
A substitute fielder is permitted to take a catch but can't be a wicketkeeper. In 1884, Billy Murdoch caught Tup Scott when playing as a substitute for England. Other players have taken catches while playing in substitute roles, such as Jackson Bird and Gursharan Singh. These catches do however not count towards an individual’s statistics.
They must be identical to each other.
Cricket replacement rules stipulate that a replacement for a bowler must take place with a replacement who is similar to the one who was injured. This means that an injured specialist batsman must be replaced by a similarly-suited spinner if he is hurt. This rule is not applicable to all players.
The International Cricket Council has set strict guidelines regarding substitutions. The rules are designed to prevent the use of substitutions that could be considered tactical. Substitute fielders can only be used in legitimate circumstances.