Described herein is a technology for facilitating skills-training mode in athletic sports that utilize a sporting-object. At least one implementation of that technology includes a rotational sensor configured to measure a series of angular velocities about a defined axis of a sporting object; a launch determiner configured to determine whether the sporting object is in a skills-training mode based upon one or more measured angular velocities of the series; and a trainer configured to both ascertain, during the skills-training mode, whether a consecutive sequence of measured angular velocities of the series falls within a defined range of angular velocities and generate an audible signal in response to the ascertainment.