Abstract: An apparatus comprises a sensor to be carried by a piece of sporting equipment and a non-transitory computer-readable medium containing program logic that operates different operational modes. The program logic receives signals from the sensor, determines from the signals whether the piece of sporting equipment is in a sport action state or a mode input state, records a sport action result in response to determination that the piece of sporting equipment is in a sport action state, and switches the program logic to a different operational mode in response to determination that the piece of sporting equipment is in a mode input state.

Abstract: An apparatus comprises a sensor to be carried by a piece of sporting equipment and a non-transitory computer-readable medium containing program logic that operates different operational modes. The program logic receives signals from the sensor, determines from the signals whether the piece of sporting equipment is in a sport action state or a mode input state, records a sport action result in response to determination that the piece of sporting equipment is in a sport action state, and switches the program logic to a different operational mode in response to determination that the piece of sporting equipment is in a mode input state.

Abstract: A racquet display system wherein of the racquets includes a head portion and a handle portion and optionally a throat portion. The head portion of each of the racquets defines a string bed plane. The system includes a first horizontally extending support configured to engage the racquets at first contact points, a second horizontally extending support configured to engage the racquets at second contact points, and a first spacing assembly. The first and second contact points define first and second average heights. The first height is greater than the second height. The system supports the racquets such that the string bed planes are vertical, and parallel with respect to each other. The handle portions of the racquets extend in a direction perpendicular to the first and second supports. Each of the handle portions extends at an angle within the range of 0 to 80 degrees with respect to horizontal.