Abstract: Golf club telemetry equipment sends signals to a receiver in a golf round data system. The signals uniquely identify the particular club a player has selected for a stroke and the fact that a stroke has been taken. The club identification can occur either before or during a stroke. Automatic detection of clubs and strokes simplifies round data collection for the player. Club identification before a stroke permits a forecast of the result of the stroke to be presented to the player prior to the stroke. The signals can be either acoustic or electromagnetic.

Abstract: A portable handheld device for collecting and displaying golf round data. The data collected for each stroke includes the location, time, and club used and the resulting ball position achieved. Before each drive or approach shot player skill level, course layout information, and player location on the course are used together with the club selected by the player to forecast the result of the next stroke. Putt break prediction information is provided before each putt. Information that a stroke has been taken and which club was used can be entered manually or sensed automatically from telemetry equipped clubs.