:confused:....Maybe

Courtesy runner. Player used in say bottom of
sixth - can she go in as legal substitute in top
of seventh?

I said yes, opposing coach and partner, both said
she could not. I allowed the substitution and
game played under protest, however, protesting
team won the game. Rule 8 Section 11D???

Speaking ASA.

As long as the coach waited until the six inning was complete, he can make the change.

FED Rules (8-5-1) A player who has been used as a courtesy runner may not be substituted for another player <b>in the same half inning</b> Exception: If an injury occurs and no other substitutes are available, the courtesy runner may substitute for the injured player.

So even if a player courtesy runs in the top half of an inning, they can enter on defense in the bottom half.