A courtesy runner may only enter when?

A courtesy runner is a player who is used to replace a base runner for various reasons, such as speed or injury. According to NFHS rules, a courtesy runner may enter the game under specific circumstances, specifically when a player who may have difficulty running is on base.

The correct answer indicates that a courtesy runner can enter at any time, provided that the conditions for utilizing one are met. This flexibility allows coaches to address player needs when a situation arises, such as an injured player or a slower runner who may not be able to advance effectively on base. It’s important that the coach notifies the umpire about the change before it takes place.

Conversely, other options present situations that are too restrictive or misrepresent the rules regarding courtesy runners. For instance, stating that a courtesy runner can only enter when the base runner first reaches base does not accurately reflect the regulation, as it offers no allowance for when a player is substituted later. Similarly, restrictions based on the number of outs, such as requiring no outs or waiting until after two outs, misinterpret the rules governing courtesy runners, which do not limit their entry based on the inning's status.