A non-transitory computer-readable storage medium storing computer-readable instructions which, when executed by a processor of a computing device, cause the computing device to carry out a method. The method comprises obtaining sensor data indicative of a parameter sensed by a sensor associated with an article of sports equipment; obtaining position data indicative of a spatial position of the sensor or of the article of sports equipment; jointly processing the sensor data and the position data to derive a hybrid metric; and outputting a signal conveying the hybrid metric on a network or storing the hybrid metric in a computer-readable memory. The sensor data and the position data may be time-aligned to a common time reference, so that the jointly processing is carried out on the time-aligned sensor data and position data. The hybrid metric measures properties that are not derivable from the sensor data alone or the position data alone.