A method of game playing known as Forehand Strike™ according to the present invention is a game being played on a court having a pair of service areas on each side of a net using a slow bouncing ball and a hand covering and striking the slow bouncing ball with a forehand shot. The method includes bouncing the slow bouncing ball one time and serving a shot diagonally over the net into an opposite service area of player 2 using a palm of a first user's hand, striking a return shot over the net and into either one of the pair of service areas of the first player, each player continuing to return a subsequent shot across the net and into one of the two service areas of an opposing player after the slow bouncing ball has bounced only once until one of the subsequent shots lands outside both of the service areas of the opposing player, and awarding a point to the player making a last valid shot into one of the service areas of the opposing player. Additionally, each player continues to return a subsequent shot across the net and into one of the two service areas of an opposing player after the slow bouncing ball has bounced only once until one of the subsequent shots lands within one of the service areas of the opposing player and bounces a second time before a next return shot is made and the point is awarded to the player making a last valid shot into one of the service areas of the opposing player.

A method of game playing known as Forehand Strike™ according to the present invention is a game being played on a court having a pair of service areas on each side of a net using a slow bouncing ball and a hand covering and striking the slow bouncing ball with a forehand shot. The method includes bouncing the slow bouncing ball one time and serving a shot diagonally over the net into an opposite service area of player 2 using a palm of a first user's hand, striking a return shot over the net and into either one of the pair of service areas of the first player, each player continuing to return a subsequent shot across the net and into one of the two service areas of an opposing player after the slow bouncing ball has bounced only once until one of the subsequent shots lands outside both of the service areas of the opposing player, and awarding a point to the player making a last valid shot into one of the service areas of the opposing player. Additionally, each player continues to return a subsequent shot across the net and into one of the two service areas of an opposing player after the slow bouncing ball has bounced only once until one of the subsequent shots lands within one of the service areas of the opposing player and bounces a second time before a next return shot is made and the point is awarded to the player making a last valid shot into one of the service areas of the opposing player.

A method of installing a binder-based overlay system may include contacting a layer of geotextile fabric to a surface of a substrate and applying a primer layer to a surface of the geotextile fabric. Two or more binder layers including infill particles may be applied over the primer layer. A resurfacer layer followed by one or more color layers may be applied over the two or more binder layers. The primer layer, one or more binder layers, resurfacer layer, and two or more color layers may cure upon application to form a monolithic layer upon the substrate.

A method of installing a binder-based overlay system may include contacting a layer of geotextile fabric to a surface of a substrate and applying a primer layer to a surface of the geotextile fabric. Two or more binder layers including infill particles may be applied over the primer layer. A resurfacer layer followed by one or more color layers may be applied over the two or more binder layers. The primer layer, one or more binder layers, resurfacer layer, and two or more color layers may cure upon application to form a monolithic layer upon the substrate.

The invention relates to a system for variable marking of a playing field (1), comprising at least two marking devices (2) designed as laser projectors, an analysis device designed to analyse a calibration pattern (3) projected onto the playing field (1) by means of a marking device (2), as well as designed to determine a distortion function from the calibration pattern (3), a control device designed to determine the position of a marking pattern (4) on the playing field (1), and a transformation device designed to apply the distortion function to the marking pattern (4) in order to obtain a target marking (5). The invention further relates to a method for variable marking of a playing field (1).

The invention relates to a system for variable marking of a playing field (1), comprising at least two marking devices (2) designed as laser projectors, an analysis device designed to analyse a calibration pattern (3) projected onto the playing field (1) by means of a marking device (2), as well as designed to determine a distortion function from the calibration pattern (3), a control device designed to determine the position of a marking pattern (4) on the playing field (1), and a transformation device designed to apply the distortion function to the marking pattern (4) in order to obtain a target marking (5). The invention further relates to a method for variable marking of a playing field (1).

Various embodiments for a pad that may be combined with other similar pads to form a padding layer of an athletic field, or other surface, are disclosed. The pad includes a top surface and a bottom surface. Bottom-side projections are positioned on the bottom surface of the pad. Water channels are positioned on the bottom surface of the pad defined as a recessed area between individual ones of the bottom-side projections. A drainage hole is positioned in at least one of the bottom-side projections such that the drainage hole does not connect with any of the water channels on the bottom surface.

Various embodiments for a pad that may be combined with other similar pads to form a padding layer of an athletic field, or other surface, are disclosed. The pad includes a top surface and a bottom surface. Bottom-side projections are positioned on the bottom surface of the pad. Water channels are positioned on the bottom surface of the pad defined as a recessed area between individual ones of the bottom-side projections. A drainage hole is positioned in at least one of the bottom-side projections such that the drainage hole does not connect with any of the water channels on the bottom surface.

A system for reversibly converting stadiums into multifunctional infrastructure by removing the pitch and storing it in a pit (6), the pitch having a set of trays (1) having a total length equal to the pitch in a longitudinal direction of the pit, which are moveable, self-supporting and have layers of soil, irrigation and turf; a set of transport trolleys (2) for lifting and moving each tray (1) from its position on the pitch to the pit (6); a set of retractable trellises (5) that can be unfolded on the pit (6), for the entry of each tray (1) from above the pit; an elevator system (8) inside the pit (6) to move each tray to its final position, in storage, or on the pitch; and a storage system (7) for storing each tray in a fixed and stable position.

A basketball system is disclosed herein. In some embodiments, the system includes a rotatable hoop assembly with a hoop and backboard mounted to a support and rotatable around a vertical axis of rotation to change an angle of the hoop and the backboard relative to a particular geo-position. The system may include a programmable display device that presents a display on a surface based at least in part on the angle of the hoop and the backboard and control logic that sends commands to change the angle of the hoop and backboard relative to the particular geo-position. In some embodiments, a rebounding system is included with a ball guide that directs balls to the particular geo-position before and after a change to the angle of the hoop and the backboard.