Abstract: A tennis stoke practice device comprises a tube comprising a first end, a second end and a hollow interior. The first end and the second end are operable for joining of accessories. A grip-bud is removably joinable to the first end. The grip-bud is configured to close the hollow interior at the first end. A grip is joined to the tube to abut the grip-bud. The grip-bud and grip comprise an octagonal shape. A movable insert is configured for projectile movement through the hollow interior in which, during a desired swing of the device, a longitudinal axis of the movable insert is substantially aligned with a longitudinal axis of the hollow interior. During an undesired swing of the device, the longitudinal axis of the movable insert rotates out of alignment with the longitudinal axis of the hollow interior.

Abstract: A tennis stoke practice device comprises a tube comprising a first end, a second end and a hollow interior. The first end and the second end are operable for joining of accessories. A grip-bud is removably joinable to the first end. The grip-bud is configured to close the hollow interior at the first end. A grip is joined to the tube to abut the grip-bud. The grip-bud and grip comprise an octagonal shape. A movable insert is configured for projectile movement through the hollow interior in which, during a desired swing of the device, a longitudinal axis of the movable insert is substantially aligned with a longitudinal axis of the hollow interior. During an undesired swing of the device, the longitudinal axis of the movable insert rotates out of alignment with the longitudinal axis of the hollow interior.

Abstract: A Laser Toss Assist is a wristband with a distinguish colored line on a back surface coming from one end to another and flexible plastic tube having a laser pointer device inside. A flexible plastic tube attached to an inner, upper side, straight under a colored line of a wristband. When Laser Toss Assist on a tossing hand can be seen a laser spot on a ball in time of a tossing action for control of direction, proper ball position, timing of a serve, palm and fingers position, body movements and successful serve. A wristband colored line makes visible and imaginable straight line going through a hand, wrist, laser beam and a ball in time of tossing action. When Laser Toss Assist on a hitting hand possible practice a hand and eyes control by quick point a laser spot on a target.