A system comprising contact and motion sensors adapted to sports equipment and coupled to a computer for the wireless communication of performance data. The computer is connected to a display for the visual simulation of player performance information and may be connected to other computers, thereby permitting competitive play among remote players.

A golf ball having formed therein a hit line for making a fade shot or a draw shot, and a manufacturing method therefor and, more specifically, to a golf ball having formed therein a hit line for making a fade shot or a draw shot, and a manufacturing method therefor, the golf ball having a balance line, a fade line, and a draw line formed on the outer surface of the golf ball to thus unify a golfer's intended direction and the flying direction of the golf ball if a driving shot or a putting shot is made, thereby enabling putting with a precise hit and enabling a fade shot or a draw shot to be more effectively made. The present invention relates to a golf ball having a plurality of dimples and a bonding line formed on the outer peripheral surface thereof, wherein: a gravity center indication point for indicating the center of gravity of the golf ball is formed on the outer surface of the golf ball; a balance line passing through the gravity center indication point is formed; and a fade line for guiding a fade shot and a draw line for guiding a draw shot are formed on both sides on the basis of the balance line in a state of being spaced apart from each other at regular intervals.

A golf ball of the present invention includes a small-size IC tag including an IC chip and a first antenna directly connected to the IC chip and having a size of 5 mm or less; and a conductive second antenna of which a part is disposed near the IC tag. The IC tag and the second antenna do not need to be in physical contact with each other. The distance between the part of the second antenna and the IC tag may be at most 1 mm. The second antenna may be arranged over at least a half of the circumference of the golf ball.

A golf putting training tool includes a body that extends circumferentially around a central axis. The body has a width as measured along the central axis and an outer diameter as measured radially about the central axis, and the width is at least twice the outer diameter. An alignment indicator extends circumferentially around the central axis and is generally centered along the width of the body. The body includes a central portion that is generally spheroid in shape and two opposed end portions coupled to the central portion.

The present disclosure relates to a golf putting aid making tool for assembling and making an ad hoc golf putting aid device. In particular, the golf putting aid making tool may include a retaining member for receiving two golf balls, a connector, and a connector stand coupled to the retaining member and centrally disposed along a lengthwise section of the golf putting aid making tool, where the connector stand receives and supports the connector for coupling the two golf balls along a center portion of the two golf balls.

A method for measuring physical properties, e.g., firmness, smoothness, trueness, green speed, of a playing surface on a golf course, includes performing measurements via a measurement apparatus. The measurement apparatus includes a spherical sensor, which in turn includes an accelerometer for measuring motion data relating to motion of the spherical sensor, a memory for storing the motion data, and a communication module for wirelessly transmitting the motion data to a computing device.

An alignment measuring tool has a computing device having at least one processor and at least one memory, a camera configured to capture images of a surface within a field of view, and a support structure configured to support the computing device and the camera in a stationary position. The support structure has a plurality of support walls forming a perimeter of an open bottom side of the support structure, wherein the plurality of support walls are configured to rest on the surface to enclose the field of view of the camera to an area of the surface. The support structure also has a calibration feature configured to provide feedback on a position of the camera relative to an area outside of the field of view of the camera.

An alignment system is configured to measure the orientation of a golf ball relative to a target point based on the positioning of an alignment aid on the golf ball with respect to a target point. The alignment system has a camera configured to capture at least one image of a golf ball placed at a placement position on a surface. The alignment system also has a computing system having at least one processing unit and memory storing instructions configured to be executed by the at least one processing unit to determine an aimed direction based on an orientation of the alignment aid in the at least one image, calculate an alignment value based on the aimed direction, and provide the alignment value to a user interface.