[bob jenkins]

Coach A indicates 7 will start on the line up. #8 reports on the court at the beginning of the set. Both #7 and #8 are on the roster.

I know the coach can use a substitute (one of the allowed 18) to have #8 start. So far, so good.

A few rotations into the set, #7 tries to substitute for #24 (a different spot in the lineup). Allowed? Reference?

I couldn't find a case on this in the book.