Fly return

In making a fly return, or any other legal return, the receiver may hit the ball anytime after it passes completely through the plane of the back edge of the short line; however no part of his/her body may extend on or over the plane of the back edge of the short line until after contacting the ball. In doubles, this also applies to the receiver’s partner. A violation results in a point for the server. After contacting the ball, the receiver and his/her partner may step on or over the short line without penalty.