Abstract: A bicycle racket holder attachable to a bicycle frame which has a rigid shell for receiving the racket. The shell has two halves which are connected by a hinge. An adapter plate or adapter frame is firmly affixed to a bicycle frame. The shell can be attached to or removed from the adapter plate or frame only with the shell in the open position. With the shell closed and locked, the shell cannot be removed from the adapter plate or frame thus securing it and the racket to the bicycle. The shell can selectively be removed and used as a protective carrying case for the racket.