NFHS 8-9-5 Courtesy Runner

[Dakota]

Originally Posted by Manny A

So the DP is the player who would be placed on second base to start a tie-breaker inning. While the defense is warming up, the offensive head coach informs the PU that she wants to substitute her Flex, who is F1, for the DP, and then use a courtesy runner for that Flex. Is that allowable?

If not, what if the head coach has the foresight to anticipate a tie-breaker inning after her DP strikes out to end the previous inning. Can she inform the PU of the change then? Or is that considered a projected substitution which some rule sets won't allow?

1. CR can be used for the last pitcher of record who earns her way on base.
2. The player placed on 2B is considered to have earned her way on base for purposes of the CR rule.
3. Substitutions are allowed during the half inning break, including entering a sub for the DP.
4. If this was a tie breaker inning, and the DP would be the player placed on 2B, then now the substitute for the DP is placed on 2B.
5. If Flex is entered for DP, Flex will be placed on 2B.
6. If Flex is also the pitcher of record, and has by rule earned her way on base, then a CR can be used for her.

What is wrong with that train of thinking?