If a back-row setter jousts with a middle blocker above the net height, what is the referee's ruling?

In volleyball, a back-row setter is not permitted to block, which is defined as any action intended to intercept the ball above the height of the net when there is an attempt by a front-row player to play the ball. When a back-row setter jousts with a middle blocker above the net height, it can be considered an attempt to block, which is illegal for the back-row player.

The referee's ruling would be an illegal block on the setter because the setter, positioned in the back row, has specific limitations regarding their involvement in the play at the net. This rule is designed to maintain the fairness of play, ensuring that back-row players do not gain an advantage similar to that of front-row players who are permitted to perform blocking actions. Thus, in this scenario, the appropriate call is to penalize the back-row setter for the illegal block.