Disclosed is system and method for measuring the tension of a tennis net, and, alternatively or in addition, for determining if a service let occurs via the measuring of the net tension. The disclosed embodiments measure a force exerted on the center-strap or the singles stick by the net. In these embodiments, the measured force provides an accurate reflection of the tension of the net.

Disclosed is system and method for measuring the tension of a tennis net, and, alternatively or in addition, for determining if a service let occurs via the measuring of the net tension. The disclosed embodiments measure a force exerted on the center-strap or the singles stick by the net. In these embodiments, the measured force provides an accurate reflection of the tension of the net.

A volleyball practice assembly includes a target unit that may be mounted to a support thereby facilitating the target unit to have a ball launched toward the target unit. The target unit registers when the ball strikes the target unit thereby facilitating the target unit to aid in accuracy training with respect to the ball. A control circuit is coupled to the target unit and the control circuit detects when the ball strikes the target unit. A remote unit is provided. The remote unit is in communication with the target unit such that the remote unit controls operational parameters of the target unit.

A pickleball training net includes a first, fixed lower net and a second adjustable upper net and a collapsible frame for holding the nets. The nets may be adjustable with respect to one another to provide an adjustable opening.

A training device for tennis provides multiple training stations for various tennis strokes.

A clamping device for holding an object in place comprising a female plate 10 with an exterior 11 and interior 12 surface and a bottom edge 15 with a plurality protrusions 16 wherein each of the protrusions has a opening 17 therein; a male plate 1 with an exterior 2 and interior 3 surface and a bottom edge 9 with a plurality of teeth 7; and at least two stepper keys 21 on said exterior 2 surface of the male plate 1; wherein the male teeth 7 fit snuggly within the female plate protrusion openings 17 such that the object placed between the male plate 1 and the female plate 10 is held in place by locking the stepper keys 21 in place.

A volleyball practice assembly includes a target unit that may be mounted to a support thereby facilitating the target unit to have a ball launched toward the target unit. The target unit registers when the ball strikes the target unit thereby facilitating the target unit to aid in accuracy training with respect to the ball. A control circuit is coupled to the target unit and the control circuit detects when the ball strikes the target unit. A remote unit is provided. The remote unit is in communication with the target unit such that the remote unit controls operational parameters of the target unit.

A volleyball training device has a training state and a using state, including a base, a volleyball net component, and an interception net component. The volleyball net component and the interception net component are detachably connected to the base. In the using state, the volleyball net component is connected to the base, and the interception net component is detached from the base. In the training state, the volleyball net component is connected to the base, and the interception net component is connected to the base. Through the structure above, when in the training state, the interception net component can intercept the volleyball that passes an upper end of the volleyball net component, facilitating a user's practice of volleyball actions such as serving and spiking. When in the using state, only the volleyball net component is connected to the base, and the user can normally hit the volleyball.

A multifunctional tennis net, comprising a pair of nets, wherein the pair of nets are arranged side by side or in a vertical direction, the pair of nets comprises two independent meshes which are bonded by Velcro. The upper and lower sides of the nets are provided with second connecting pipes, and the left and right sides of the nets are provided with first connecting pipes. The bottom of the first connecting pipes are movably inserted with a bracket, and the outer wall of the first connecting pipes are sleeved with T-shaped sleeves and Z-shaped sleeves. The first connecting pipes are movably plugged with the second connecting pipes through the T-shaped sleeves, the first connecting pipes are movably plugged with the brackets through the Z-shaped sleeves, and the T-shaped sleeves and the Z-shaped sleeves are provided with positioning holes.