A device for playing a ball game by hurling a ball against a wall and catching it on the rebound is described. The device comprises a hollow, cylindrical body member resembling an elongated capsule with the top half of the capsular diameter removed for approximately 2/3 of its length, forming thus an open topped channel section, the remainder forming a closed end base section the rounded end of which serves as the hand hold for using the device, the inner surface of the channel and base sections integrally defining a passageway for the ball when it is either thrown or caught by the device; a safety strap including means for its connection to the device and attachment to the player's wrist is also described.