Abstract: A device for scoring the opposing sides of a tennis match which is adapted to be mounted on the side of a tennis racket handle. A variation of this device may be employed to keep count of the games won by each side. The device comprises an elongated, flexible, transparent structure which is segmented into two compartments by a seam across its mid section. Enclosed within each compartment is a bead-like chip or marker which is slideably movable therein when the marker is pressed gently. Each chip is held in place by a spring-like action wedging it against the wall of its compartment and preventing it from being moved inadvertently during the game. The structure itself is sandwiched between two strips of film which are adhesively attached together. The outer film layer includes an elongated transparent panel through which each marker may be viewed within its compartment and upon which are imprinted indicia, each of which corresponds to a score in a tennis game.