A cover for rackets, such as table tennis rackets, having an impact portion (13) and a handle portion (14), such covering consisting of a casing with an inner space (16) accommodating the racket and into which the racket is intended to be placed. The casing (1) is generally constructed of two connected plate-shaped members (2 and 3) positioned at a distance from each other, and it exhibits an opening (6) into which the racket is intended to be inserted to a position which is determined by stopping means (4) in the casing. Each of the plate-shaped elements exhibits holes (7, 8) placed directly in front of each other and into which holes a ball is intended to be placed after the racket is inserted into the casing. The holes are placed outside of that portion of the plate-shaped members which is located directly adjacent to the impact portion (13) of the racket when in its inserted position. Furthermore, the holes are arranged so as to hold the balls in such a position that they span the space (16) between the plate-shaped members. Stopping means (5) are provided in the casing to, in cooperation with the balls, by stopping sections of the racket, secure the racket in the inserted position in the casing.