I thought an overhand right was a fairly common shot but perhaps they were just straight rights with the elbow up/out..? I sort of thought that was a no no with the straight right.

It seems to be more with short right hands,Perhaps this is because if you cant get full extension on it then it sort of smothers the shot but if you pop the elbow out you can still get a good snap to it.

Might see if I can find some videos to help explain.