scratchman
/ˈskrætʃmæn/Definitions
1. noun
A name given to a person who has been designated as a ‘scratch’ player or reserve, especially in a sports team, to replace an injured player.
“The scratchman came on the field in the second half to replace the injured midfielder.”
2. noun
A person whose task is to provide an alternate in case of an emergency or injury, especially in a theatrical or musical performance.
“The scratchman was waiting in the wings to replace the lead actor if needed.”