Offensive Elbow.

[26 Year Gap]

Originally Posted by The R

Post player receives pass at free throw line near his basket. Looks to pass but has nothing. Keeps looking for open teammate. Throws elbow behind him while turning with the ball and connects with defense in the kisser.

You sound the whistle with the intention to call a foul.

What are your foul options? Why would you make them?

Did he throw the elbow? Was he pivoting when the elbow was 'thrown'? And if so, as Snaqs pointed out, was he holding the ball with elbows outstretched and those elbows were not going any faster than the pivot?